Solid Polymer Treated By Stepwise Reaction With Naturally Occurring Alpha Or Beta Amino Acid Or A Material Which Contains A Residue Of Said Amino Acid, E.g., A Functionally Protected Amino Acid, Etc. Patents (Class 525/54.11)
  • Patent number: 11834559
    Abstract: A type of composite material where the matrix material and additive are held together by covalently or non-covalently bound ligands is described. A particularly useful composite material covered by the present invention is a carbon nanotube-reinforced composite material where the matrix consists of a polymer, covalently attached to a linker, where said linker is non-covalently attached to the carbon nanotube. Methods for the preparation of such composite materials are provided.
    Type: Grant
    Filed: January 26, 2021
    Date of Patent: December 5, 2023
    Assignee: Nanocore APS
    Inventors: Mikkel Dybro Lundorf, Henrik Pedersen, Tore Dehli
  • Patent number: 10767073
    Abstract: A curable film-forming composition is provided, comprising: (a) a polymeric polyester binder comprising a plurality of carbamate groups; (b) a curing agent reactive with the carbamate functional groups of (a); and (c) a reaction product of: (1) a hydroxyl functional polymer comprising the reaction product of: (i) a monomer comprising at least two ethylenically unsaturated double bonds; (ii) a monomer comprising a carbon atom that is bonded to four moieties wherein one of the moieties is a hydrogen atom and the remainder of the moieties comprises an alkyl group, wherein at least one of the alkyl group-containing moieties comprises an ethylenically unsaturated double bond; and (iii) at least one monomer that is polymerizable with (i) and (ii); and (2) a lactone or lactam. Also provided are a multi-component composite coating composition that includes the curable film-forming composition described above and methods for forming a composite coating on a substrate.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: September 8, 2020
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Shanti Swarup, Jason Ryan Lewis
  • Patent number: 10376540
    Abstract: The invention relates to tungsten (VI) salts for use thereof in the treatment of infertility in a non-diabetic female mammal, for favoring normal reproduction and fertility in a non-diabetic female mammal, or for increasing the efficacy of an assisted reproductive technique applied to a mammal, as well as compositions containing same and methods for treatment using same.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: August 13, 2019
    Assignee: OXOLIKE, S.L.
    Inventors: Ignacio Canals Almazán, Agnès Arbat Bugié
  • Patent number: 9675638
    Abstract: The present invention comprises the use of a therapeutically effective amount of a tungsten (VI) salt with a pharmaceutically or veterinarily acceptable cationic group, or a solvate of said salt, for the preparation of a medicinal product for the treatment of female infertility in non-diabetic mammals.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: June 13, 2017
    Assignee: OXOLIFE, S.L.
    Inventors: Ignacio Canals Almazán, Agnès Arbat Bugié
  • Patent number: 9518086
    Abstract: The present disclosure provides novel crystalline forms of a compound that acts as a ?-arrestin effector, processes for preparing novel crystalline and amorphous forms of a compound that acts as a ?-arrestin effector and uses thereof.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: December 13, 2016
    Assignee: Trevena, Inc.
    Inventors: Ritesh Sanghvi, Gregory Alcorn, Graham Richard Lawton, Meiki Yu, Matthew Ronsheim, Jiaher Tian, Shao Hong Zhou, Yuriy B. Kalyan
  • Patent number: 9212148
    Abstract: Reagents and methods for functionalizing polypeptides with moieties (alkylene glycol) molecules and glycan groups are disclosed that are based on a functionalizing reagent which comprises a nitrogen containing heterocyclic aromatic ring having a vinyl substituent that is capable of reacting with one or more thiol groups that are naturally present, or have been introduced into, the polypeptide, for example by employing a thiol group of one or more cysteine residues. The functionalizing reagent is covalently linked to a poly(alkylene glycol) molecule, such as a polyethylene glycol (PEG) molecule, or a glycan group so that the reaction between the vinyl group and the thiol group in the polypeptide covalently links the polypeptide to the poly(alkylene glycol) molecule and/or the glycan group.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: December 15, 2015
    Assignee: Glythera Limited
    Inventors: Andrew Graham Watts, Terrence Kantner, Amanda Barbara MacKenzie
  • Patent number: 9066905
    Abstract: The invention provides heteropolymer compositions and peptide compositions, and methods of making and using therapeutic compositions comprising amino acid heteropolymers for treatment of a subject for an autoimmune or an inflammatory disease, the heteropolymer compositions made by solid state synthesis. The invention also provides kits for assaying binding of a composition to a water-soluble MHC protein.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: June 30, 2015
    Assignee: President and Fellows of Harvard College
    Inventors: Jack L. Strominger, Masha Fridkis-Hareli
  • Patent number: 8945896
    Abstract: Ligand functionalized substrates, methods of making ligand functionalized substrates, and methods of using functionalized substrates are disclosed.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: February 3, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Jerald K. Rasmussen, Catherine A. Bothof, Kannan Seshadri, Erin A. Satterwhite, Robert T. Fitzsimons, Jr., James L. Hembre, Mahfuza B. Ali
  • Patent number: 8853325
    Abstract: The present invention is directed to alkanal derivatives of water-soluble polymers such as poly(ethylene glycol), their corresponding hydrates and acetals, and to methods for preparing and using such polymer alkanals. The polymer alkanals of the invention are prepared in high purity and exhibit storage stability.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: October 7, 2014
    Assignee: Nektar Therapeutics
    Inventor: Antoni Kozlowski
  • Patent number: 8809453
    Abstract: The present invention is directed to branched reactive water-soluble polymers comprising at least two polymer arms, such as poly(ethylene glycol), attached to a central aliphatic hydrocarbon core molecule through heteroatom linkages. The branched polymers bear at least one functional group for reacting with a biologically active agent to form a biologically active conjugate. The functional group of the branched polymer can be directly attached to the aliphatic hydrocarbon core or via an intervening linkage, such as a heteroatom, -alkylene-, —O-alkylene-O—, -alkylene-O-alkylene-, -aryl-O—, —O-aryl-, (—O-alkylene-)m, or (-alkylene-O—)m linkage, wherein m is 1-10.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: August 19, 2014
    Assignee: Nektar Therapeutics
    Inventors: Michael David Bentley, Xuan Zhao, Xiaoming Shen, William Dudley Battle, III
  • Patent number: 8742028
    Abstract: The present invention provides a solid support for Fmoc-solid phase synthesis of peptides. In particular, the solid supports of the invention may be utilized to produce peptide acids.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: June 3, 2014
    Assignee: Mallinckrodt LLC
    Inventors: Kripa S. Srivastava, Matthew R. Davis
  • Patent number: 8674020
    Abstract: There is provided a novel process for preparing polyamides (in particular cyclic and hairpin polyamides) comprising the step of coupling an amine with a Boc-protected amino acid monomer in the presence of diphosgene and/or triphosgene. Such a process may be performed on a solid or solution phase.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: March 18, 2014
    Assignee: University of Leicester
    Inventors: Wu Su, Glenn Ashley Burley
  • Patent number: 8519051
    Abstract: The present invention provides a block copolymer for a drug conjugate which comprises a water-soluble polymer region consisting of polyethylene glycol and a polyamino acid region having a hydrazide group and a hydrophobic group in the side chain.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: August 27, 2013
    Assignee: Nanocarrier Co., Ltd.
    Inventors: IuIian Bobe, Naoya Shibata, Hiroyuki Saito, Mitsunori Harada
  • Patent number: 8461259
    Abstract: The invention relates to a binder for producing materials based on wood chips and/or wood fibers. The aim of the invention is to design a binder which is used for producing and gluing materials based on wood chips and/or wood fibers, contains natural protein components, significantly reduces or even eliminates the drawbacks of the prior art, and can be economically produced and used. Said aim is achieved by a binder which is used for materials based on wood chips and/or wood fibers, comprises an aldehyde-based condensation resin and other additives, and is characterized in that the binder comprises a water-soluble reactive additive containing a peptide/amino acid mixture without moieties of water-insoluble and high-viscosity proteins. The invention also relates to a method for producing said binder as well as a molded article.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: June 11, 2013
    Assignee: Dynea Oy
    Inventors: Hendrikus W. G. van Herwijnen, Wolfgang Heep, Detlef Krug, Andreas Weber, Axel Höhling, Maria Schultze
  • Patent number: 8378022
    Abstract: A biocompatible, biodegradable, macromolecular water-absorbent hybrid material (WAHM), having a three-dimensional configuration with intermolecular covalent bonds and containing free functional groups, said polymer being formed by polymer-polymer intercoupling reaction between a natural water-soluble polymer A or its derivatives having a molecular weight between 20,000 and 300,000 Da, and a synthetic polymer B in an adequate ratio wherein the natural polymer A is selected from amphoteric reactants, partially denatured or chemically modified natural polymer, that dissociates in water to form both anions and cations, and which can undergo polymer-polymer intercoupling reactions, and wherein synthetic polymer B s a linear or branched reactive synthetic copolymer having a molecular weight of 50,000-500,000 Da derived from a vinyl monomer and an ethylenically unsaturated monomer, having a backbone with polymeric subunits covalently bonded to the polymer backbone, the subunits comprising ones with non-reactive and
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: February 19, 2013
    Assignee: Exotech Bio Solutions Ltd.
    Inventors: Mircea Dan Bucevschi, Monica Colt, Mendy Axlerad
  • Patent number: 8273833
    Abstract: The present invention is directed to branched reactive water-soluble polymers comprising at least two polymer arms, such as poly(ethylene glycol), attached to a central aliphatic hydrocarbon core molecule through ether linkages. The branched polymers bear at least one functional group for reacting with a biologically active agent to form a biologically active conjugate. The functional group of the branched polymer can be directly attached to the aliphatic hydrocarbon core or via an intervening linkage, such as a heteroatom, -alkylene-, —O-alkylene-O—, -alkylene-O-alkylene-, -aryl-O—, —O-aryl-, (—O-alkylene-)m, or (-alkylene-O—)m linkage, wherein m is 1-10.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: September 25, 2012
    Assignee: Nektar Therapeutics
    Inventors: Michael David Bentley, Xuan Zhao, Xiaoming Shen, William Dudley Battle, III
  • Patent number: 8227403
    Abstract: The present invention is directed to methods of producing conjugates of A? peptide immunogens with protein/polypeptide carrier molecules, which are useful as immunogens, wherein peptide immunogens are conjugated to protein carriers via activated functional groups on amino acid residues of the carrier or of the optionally attached linker molecule, and wherein any unconjugated reactive functional groups on amino acid residues are inactivated via capping, thus retaining the immunological functionality of the carrier molecule, but reducing the propensity for undesirable reactions that could render the conjugate less safe or effective. Furthermore, the invention also relates to such immunogenic products and immunogenic compositions containing such immunogenic products made by such methods.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: July 24, 2012
    Assignees: Wyeth LLC, Janssen Alzheimer Immunotherapy
    Inventors: Rasappa G. Arumugham, A. Krishna Prasad, Michael Hagen
  • Publication number: 20120157563
    Abstract: A solid phase peptide synthesis method is disclosed. The method includes the steps of deprotecting an amino group in its protected form that is protected with a protecting group that includes an ?,?-unsaturated sulfone; washing the deprotected acid in a solvent selected from the group consisting of water, alcohol, and mixtures of water and alcohol; coupling the deprotected acid to a resin-based peptide or a resin-based amino acid; and washing the coupled composition in a solvent selected from the group consisting of water, alcohol, and mixtures of water and alcohol.
    Type: Application
    Filed: February 1, 2012
    Publication date: June 21, 2012
    Applicant: CEM CORPORATION
    Inventor: Jonathan M. Collins
  • Publication number: 20120130017
    Abstract: There is provided a novel process for preparing polyamides (in particular cyclic and hairpin polyamides) comprising the step of coupling an amine with a Boc-protected amino acid monomer in the presence of diphosgene and/or triphosgene. Such a process may be performed on a solid or solution phase.
    Type: Application
    Filed: April 28, 2010
    Publication date: May 24, 2012
    Applicant: UNIVERSITY OF LEICESTER
    Inventors: Wu Su, Glenn Ashley Burley
  • Publication number: 20120101230
    Abstract: A method for providing high-density polymer surface for attaching proteins or peptides, and binding proteins, peptides, DNAs, cells, small molecules, and other chemical or biological molecules that are of interests in the areas of proteomic, genomic, pharmaceutical, drug discovery, and diagnostic studies.
    Type: Application
    Filed: February 5, 2009
    Publication date: April 26, 2012
    Inventors: Guobin (Frank) Wang, Lance Laing
  • Patent number: 8076412
    Abstract: The present invention is directed to alkanal derivatives of water-soluble polymers such as poly(ethylene glycol), their corresponding hydrates and acetals, and to methods for preparing and using such polymer alkanals. The polymer alkanals of the invention are prepared in high purity and exhibit storage stability.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: December 13, 2011
    Assignee: Nektar Therapeutics
    Inventor: Antoni Kozlowski
  • Publication number: 20110288235
    Abstract: The present invention provides for an efficient process for making pramlinitide, as well as novel intermediates for the making of the same.
    Type: Application
    Filed: May 23, 2011
    Publication date: November 24, 2011
    Applicant: ScinoPharm Taiwan Ltd.
    Inventors: Tsung Yu Hsiao, Jin Guo Ding
  • Patent number: 8008262
    Abstract: ?-peptide regions of polypeptides can serve as structural mimics of ?-helices in wild type proteins. Because ?-helices of one protein often bind to a target protein in a biological pathway, a polypeptide that contains a helical ?-peptide region can be used to disrupt this type of protein-protein binding. As a result, polypeptides that contain a helical ?-peptide region can be used to treat conditions involving this type of protein-protein binding, such as viral infections and cell proliferation.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: August 30, 2011
    Assignee: Yale University
    Inventors: Alanna Schepartz Shrader, Scott A. Hart, Joshua A. Kritzer, Olen M. Stephens
  • Patent number: 7989532
    Abstract: An RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid)/?-tricalcium phosphate composite material is composed of ?-tricalcium phosphate particles and RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid) with mass ratio of 1:10-1:100, in which the ?-tricalcium phosphate particles are uniformly dispersed in the RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid) matrix. The preparation method includes that poly (glycolic acid-L-lysine-L-lactic acid) is polymerized with GRGDY short peptide (glycin-arginine-glycin-aspartic acid-tyrosine sequence) to obtain RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid), and then RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid) is compounded with ?-tricalcium phosphate particles.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: August 2, 2011
    Assignee: Wuhan University of Technology
    Inventors: Shipu Li, Yingchao Han, Yuhua Yan, Tao Wan, Xinyu Wang, Lin Yuan, Honglian Dai, Qiongjiao Yan
  • Patent number: 7838595
    Abstract: The present invention is directed to alkanal derivatives of water-soluble polymers such as poly(ethylene glycol), their corresponding hydrates and acetals, and to methods for preparing and using such polymer alkanals. The polymer alkanals of the invention are prepared in high purity and exhibit storage stability.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: November 23, 2010
    Assignee: Nektar Therapeutics
    Inventor: Antoni Kozlowski
  • Patent number: 7605232
    Abstract: A method of concentrating proteins from whole blood comprising exposing whole blood to covalently crosslinked hydrogel to remove water from the blood into the hydrogel to thereby concentrate the proteins in the whole blood. The hydrogel may absorb, for example, 50% or 90% of the water from the blood while excluding proteins with a weight of more than about 15,000 Daltons. In some embodiment, the hydrogels are dry, sterile, and spherical.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: October 20, 2009
    Assignee: Incept LLC
    Inventor: Chandrashekhar P. Pathak
  • Patent number: 7598318
    Abstract: The present invention relates to a thermosensitive and biocompatible poly(organophosphazenes) represented by Formula 1, and a preparation method thereof: wherein R is a methyl or ethyl group; R? is selected from the group consisting of COOR, CH2COOR, CH2CH2COOR, CH2CH(CH3)2, CH2C6H5, CH(CH3)CH2CH3 and CH3; R? is selected from the group consisting of CH2COOR, CH2CH2COOR, CH2CH(CH3)2, CH2C6H5, CH(CH3)CH2CH3 and CH3; R?? is a group selected from the group consisting of CH2COOR, CH2CH2COOR and H, wherein R is the same as defined above; n is a number between from 30 to 100; x is a number selected from the integers of 3, 4, 7, 12 and 16; y is a number between from 0.5 to 1.5; a equals to 1; and b and c equal to 0 or 1.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: October 6, 2009
    Assignee: EWHA University - Industry Collaboration Foundation
    Inventors: Youn Soo Sohn, Ji Yeon Seong, Yong Joo Jun, Joo Ik Kim
  • Patent number: 7592418
    Abstract: Biocompatible crosslinked polymers, and methods for their preparation and use, are disclosed in which the biocompatible crosslinked polymers are formed from water soluble precursors having electrophilic and nucleophilic functional groups capable of reacting and crosslinking in situ. Methods for making the resulting biocompatible crosslinked polymers biodegradable or not are provided, as are methods for controlling the rate of degradation. The crosslinking reactions may be carried out in situ on organs or tissues or outside the body. Applications for such biocompatible crosslinked polymers and their precursors include controlled delivery of drugs, prevention of post-operative adhesions, coating of medical devices such as vascular grafts, wound dressings and surgical sealants. Visualization agents may be included with the crosslinked polymers.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: September 22, 2009
    Assignee: Incept LLC
    Inventors: Chandrashekhar P. Pathak, Amarpreet S. Sawhney, Peter G. Edelman
  • Publication number: 20090131589
    Abstract: The present disclosure relates to processes for preparing metal-free, mono-dispersed polymers of amino acids. The polymers include homopolymers, random copolypeptides, block copolypeptides, block copolymers with at least one peptidyl block, grafted copolypeptides, and polypetidyl dendrimers. The disclosed process does not make use of a heavy metal catalyst, inter alia, copper or nickel containing reagents. The disclosed process encompasses a “living polymerization” such that the growth of each polymer chain is not truncated or otherwise halted by undesirable side reactions or limitations due to the length or size of the growing polymer chain, provides amino acid comprising polymers having a narrow polydispersity, is conducted at lower temperatures, and avoids the premature secondary folding that inhibits the formation of polymers having a low polydispersity index.
    Type: Application
    Filed: October 29, 2008
    Publication date: May 21, 2009
    Inventors: Carmen Scholz, Willy Vayaboury
  • Publication number: 20090099307
    Abstract: A process for preparing a peptide by solid phase synthesis in the N to C direction comprising a capping step after an amide bond formation step to prevent or reduce deletion artefacts.
    Type: Application
    Filed: March 13, 2006
    Publication date: April 16, 2009
    Applicant: ACTIVOTEC SPP LIMITED
    Inventor: Ram Prakash Sharma
  • Publication number: 20090082438
    Abstract: The invention discloses a coordination compound comprising (1,2-diaminocyclohexane)platinum (II) moiety and poly(ethylene glycol)-block-poly(glutamic acid) copolymer moiety; and its use as an anti-cancer agent. The characteristic feature lies in the use of a copolymer whose poly(glutamic acid) segment has a chain length consisting of, on an average, less than 35 repeating units.
    Type: Application
    Filed: March 16, 2006
    Publication date: March 26, 2009
    Inventors: Kazunori Kataoka, Nobuhiro Nishiyama, Horacio Cabral
  • Patent number: 7332566
    Abstract: Biocompatible crosslinked polymers, and methods for their preparation and use, are disclosed in which the biocompatible crosslinked polymers are formed from water soluble precursors having electrophilic and nucleophilic functional groups capable of reacting and crosslinking in situ. Methods for making the resulting biocompatible crosslinked polymers biodegradable or not are provided, as are methods for controlling the rate of degradation. The crosslinking reactions may be carried out in situ on organs or tissues or outside the body. Applications for such biocompatible crosslinked polymers and their precursors include controlled delivery of drugs, prevention of post-operative adhesions, coating of medical devices such as vascular grafts, wound dressings and surgical sealants. Visualization agents may be included with the crosslinked polymers.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: February 19, 2008
    Assignee: Incept LLC
    Inventors: Chandrashekhar P. Pathak, Amarpreet S. Sawhney, Peter G. Edelman
  • Patent number: 7211651
    Abstract: Proteinaceous gels having visualization agents and methods of use thereof are disclosed herein. Further, polymeric crosslinking agents are disclosed that have an inert water soluble polymeric component, biodegradable components, functional components reactive with chemical groups on a protein, for example, amine or thiol groups. The inert polymeric component may be flanked at each end with a biodegradable component which is flanked at each end with a protein reactive functional component. A polymeric crosslinking agent is disclosed having a biodegradable component, polyalkylene oxide, and at least three reactive functional groups that are each capable of forming a covalent bond in water with at least one functional group such as an amine, thiol, or carboxylic acid.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: May 1, 2007
    Assignee: Incept LLC
    Inventor: Chandrashekhar P. Pathak
  • Patent number: 7182884
    Abstract: A bio-liquid crystal polymer is made from a tissue-derived compound or the derivatives. The bio-liquid crystal polymer has a characteristic of liquid crystal under predetermined conditions and is biocompatible.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: February 27, 2007
    Assignees: Toyoda Gosei Co., Ltd.
    Inventors: Tatsuo Kaneko, Michiya Matsusaki, Tran Thi Hang, Mitsuru Akashi, Naoto Kuriyama
  • Patent number: 7081495
    Abstract: Dendrimers comprising a dentritic polypeptide with one dendron having terminal cationic groups and a lipidic anchor, preferably comprising C6-24-alkyl group containing ?-amino acyl groups, preferably joined to the focal group, are used to assist transfection of cells in vitro and in vivo by DNA. The complex of dendrimer and DNA may be used in gene therapy, for instance to delivery clotting factor genes to cells.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: July 25, 2006
    Assignee: School of Pharmacy, University of London
    Inventors: Alexander T Florence, Andrew F Wilderspin, Istvan Toth, Henry K Bayele, Thiagarajan Sakthivel
  • Patent number: 7057019
    Abstract: Materials, methods, and compositions for making crosslinked albumin hydrogels are included in the application. Embodiments include a biocompatible material of albumin crosslinked with an n-functional crosslinking agent wherein n is at least 3. Other embodiments include a cross-linking agent having a polyalkylene oxide member. Other embodiments include a system for administering an albumin material, the system having albumin and a crosslinking agent that reacts with the albumin to form a crosslinked material made of crosslinked albumin. Another embodiment is a method of making a biocompatible material that includes a step of mixing albumin with an n-functional crosslinking agent wherein n is at least 3.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: June 6, 2006
    Assignee: Incept LLC
    Inventor: Chandrashekhar P. Pathak
  • Patent number: 7022214
    Abstract: Carboxylic acid-substituted polyalkylene polyamines in which amine nitrogen atoms on the polyamine backbone structure are replaced by guanidine groups provide a pH range extending into high pH values. These substances are useful as carrier ampholytes in isoelectric focusing.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: April 4, 2006
    Assignee: Bio-Rad Laboratories, Inc.
    Inventor: Lee Olech
  • Patent number: 7009034
    Abstract: Biocompatible crosslinked polymers, and methods for their preparation and use, are disclosed in which the biocompatible crosslinked polymers are formed from water soluble precursors having electrophilic and nucleophilic functional groups capable of reacting and crosslinking in situ. Methods for making the resulting biocompatible crosslinked polymers biodegradable or not are provided, as are methods for controlling the rate of degradation. The crosslinking reactions may be carried out in situ on organs or tissues or outside the body. Applications for such biocompatible crosslinked polymers and their precursors include controlled delivery of drugs, prevention of post-operative adhesions, coating of medical devices such as vascular grafts, wound dressings and surgical sealants. Visualization agents may be included with the crosslinked polymers.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: March 7, 2006
    Assignee: Incept, LLC
    Inventors: Chandrashekhar P. Pathak, Amarpreet S. Sawhney, Peter G. Edelman
  • Patent number: 6887974
    Abstract: Polymeric crosslinking agents are disclosed that have an inert water soluble polymeric component, biodegradable components, functional components reactive with chemical groups on a protein, for example, amine or thiol groups. The inert polymeric component may be flanked at each end with a biodegradable component which is flanked at each end with a protein reactive functional component. A polymeric crosslinking agent is disclosed having a biodegradable component, polyalkylene oxide, and at least three reactive functional groups that are each capable of forming a covalent bond in water with at least one functional group such as an amine, thiol, or carboxylic acid.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: May 3, 2005
    Assignee: Incept LLC
    Inventor: Chandrashekhar P. Pathak
  • Patent number: 6833488
    Abstract: A bio-compatible, biodegradable macromolecular water-absorbent polymeric material having a three-dimensional configuration with intermolecular covalent bonds and containing free functional groups selected from OH, SH, NH2, and COOH. The polymer is formed by polymer-polymer inter-coupling interaction between a natural water-soluble polymer A or its derivatives having a molecular weight between 20,000 and 500,000 Da, and a synthetic polymer B in a ratio of A:B of 15:85 to 85:15.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: December 21, 2004
    Assignee: Exotech Bio Solution Ltd.
    Inventors: Mircea Dan Bucevschi, Monica Colt
  • Patent number: 6750312
    Abstract: A method for preparing a solid support material for carrying out a chemical reaction, said method comprising the following steps: (i) reacting an amino functionalised solid material with a carboxylic acid having at least two similarly protected amino groups to form amide bonds between them, (ii) removing protecting groups in a single step, (iii) optionally repeating steps (i) and (ii) one or more times using the product of the preceding step as the amino functionalised solid material, and (iv) connecting a linkage agent to at least some of the free NH2 groups of the product. The method increases the loading capacity of the solid support material. It is particularly useful in connection with peptide synthesis.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: June 15, 2004
    Assignee: Avecia Limited
    Inventors: Craig Stephen Harris, Donald Alfred Wellings, Francis Joseph Montgomery, Richard John Brown
  • Patent number: 6737501
    Abstract: Process for the preparation of copolymeric polypeptides, which comprises, in a first stage, reacting glutamic acid and/or derivatives thereof with amines in the absence of solvents and catalysts, under condensation conditions and, in a second stage, adding one or more further amino acids and/or derivatives thereof and/or one or more identical and/or further amines simultaneously or in any desired order, and reacting them with the reaction product of the first stage in the absence of solvents and catalysts.
    Type: Grant
    Filed: January 3, 2003
    Date of Patent: May 18, 2004
    Assignee: Goldschmidt AG
    Inventors: Thomas Dietz, Erika Messinger, Peter Muss, Ute Schick, Christian Weitemeyer, Astrid Zündorff
  • Patent number: 6730293
    Abstract: This invention provides compositions and methods for enhancing delivery of glucocorticoids and ascomycins such as hydrocortisone, cyclosporin and FK506 across into and across one or more layers of the skin for the treatment of psoriasis and other inflammatory diseases of the skin.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: May 4, 2004
    Assignee: CellGate, Inc.
    Inventors: Jonathan B. Rothbard, Paul A. Wender, P. Leo McGrane, Lalitha V. S. Sista, Thorsten A. Kirschberg
  • Publication number: 20040063856
    Abstract: A crosslinked polymer bead which, when: (i) functionalized with a 2-chlorotrityl chloride group; (ii) coupled with Leu to 0.65 mmol/g; and (iii) coupled with Glu(t-Bu); allows coupling of FMOC-Lys(BOC)-OH at an amount of 1.5 equivalents in the presence of 1.5 equivalents of HOBT, 1.5 equivalents of DIEA and 1.5 equivalents of HBTU, to be completed, as determined by the Kaiser test, in no more than 35 minutes.
    Type: Application
    Filed: September 16, 2003
    Publication date: April 1, 2004
    Inventors: James Charles Bohling, Martin Kenneth Kinzey, John Joseph Maikner, William Joseph Zabrodski
  • Patent number: 6713580
    Abstract: The present invention relates to novel templates useful for generating novel compounds and to compounds produced utilizing the templates. The templates comprise quaternary amino acids that may be linked to solid supports. These templates make possible the production of novel classes of chemical compounds through a plurality of chemical reactions. The templates are advantageous for use in drug discovery regimes.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: March 30, 2004
    Assignee: Pharmacore, Inc.
    Inventors: Michael Johnson, Keqiang Li, Elso DiFranco, Daljit S. Dhanoa
  • Patent number: 6689836
    Abstract: The present invention relates to a process for the preparation of thermoprecipitating affinity polymers useful in the enhanced recovery of enzymes. The process comprises polymerising a monomer comprising a spacer and a co-monomer with a polymerisation initiator and a polymerisation accelerator at ambient temperature and pressure for a period ranging between 2 to 24 hours to obtain a polymer and then linking an inhibitor to pendant carboxyl groups of the spacers in the polymer to obtain an affinity polymer.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: February 10, 2004
    Assignee: Council of Scientific and Industrial Research
    Inventors: Alankar Arun Vaidya, Bhalchandra Shripad Lele, Mohan Gopalkrishna Kulkarni, Raghunath Anant Mashelkar
  • Patent number: 6670427
    Abstract: Template-textured materials in the form of template-textured polymers (TGP) on various surfaces including membranes (i.e, template-textured membranes). Such materials are created by modifying the surface of solid carriers, which, by cross-linking polymerization of functional monomers initiated on the surface of said solid carriers in the presence of a template, leads to stable template prints that subsequently bind template molecules or template derivatives in a specific manner. The invention also relates to methods for the production of TGPs and to the use thereof for substance-specific separation of materials.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: December 30, 2003
    Assignee: Poly-Am GmbH
    Inventors: Mathias Ulbricht, Sergiy Piletski, Uwe Schedler, Heike Matuschewski
  • Patent number: 6620882
    Abstract: The present invention relates to a novel solid support template of Formula (I) and methods for producing novel highly functionalized imidazoles, pyrazinones and benzodiazepinones through a plurality of chemical reactions utilizing the solid support template
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: September 16, 2003
    Assignee: Advanced Syntech, LLC
    Inventors: Eugene Campian, Boliang Lou, Kexin Yang, Jinfang Zhang
  • Publication number: 20030158377
    Abstract: The invention features a new solid supports having at least one amino functionality and a linker bound to the solid support through at least a portion of the amino functional groups. The invention also features solid support bound substrates suitable for use in the formation of macrocycles by a TE domain catalyzed macrocyclization reaction. The invention features methods of making the solid supports and solid support bound substrates of the invention and methods of effecting macrocyclizations of solid support bound substrates. The invention further provides new macrocyclic molecules having one or more peptide domains and one or more polyketide domains in the macrocyclic ring. In another embodiment of the invention, libraries of macrocycles are provided as well as methods of forming libraries of macrocycles from libraries of solid support bound substrates are provided.
    Type: Application
    Filed: November 6, 2002
    Publication date: August 21, 2003
    Applicant: President and Fellows of Harvard College
    Inventors: Christopher Thomas Walsh, Rahul Manu Kohli, Michael D. Burkart, Martin D. Burke
  • Publication number: 20030158333
    Abstract: The invention provides reagents and methods for conjugating a polymer specifically to the &agr;-amine of a polypeptide. The invention provides monofunctional, bifunctional, and multifunctional PEGs and related polymers having a terminal thioester moiety capable of specifically conjugating to the &agr;-amine of a polypeptide having a cysteine or histidine residue at the N-terminus. The invention provides reactive thioester-terminated PEG polymers that have suitable reactivity with an N-terminal cysteine or histidine residue of a polypeptide to produce an amide bond between the PEG molecule and the polypeptide.
    Type: Application
    Filed: October 9, 2002
    Publication date: August 21, 2003
    Applicant: Shearwater Corporation
    Inventors: Michael J. Roberts, Zhihao Fang