Patents by Inventor Donald Wellings

Donald Wellings has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11273207
    Abstract: The invention provides a blood substitute product comprising haemoglobin and a self-assembled microparticle having an acid having two or more acid groups and an organic base in a solvent. The particle is of micron scale. The microparticle may be obtained by contacting a bis-acid and organic base in a hydrophilic solvent, wherein the acid is insoluble or sparingly soluble in the hydrophilic solvent and the organic base is soluble in a hydrophilic solvent.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: March 15, 2022
    Assignee: Spheritech Ltd.
    Inventor: Donald A. Wellings
  • Publication number: 20210284609
    Abstract: Described herein are heterocyclic azide-containing monomer units, copolymers comprising such heterocyclic azide-containing monomer units, substrate-bound copolymers, and oligonucleotide-bound copolymers, methods for making such copolymers and reacting them with a substrate and/or oligonucleotide, and methods of using such copolymers for immobilization of oligonucleotides to a substrate, for example for use in DNA sequencing or other diagnostic applications.
    Type: Application
    Filed: December 9, 2019
    Publication date: September 16, 2021
    Inventors: Wayne N. George, Xiaolin Wu, Andrew A. Brown, Donald Wellings
  • Publication number: 20200230032
    Abstract: The invention provides a personal care product or a home care product having self-assembled microparticles having an acid having two or more acid groups and an organic base in a solvent. The microparticles may form into a macrostructure and provide a support for carrying components of a personal care or home care composition. The particle is of micron scale. The microparticle may be obtained by contacting a bis-acid and organic base in a hydrophilic solvent, wherein the acid is insoluble or sparingly soluble in the hydrophilic solvent and the organic base is soluble in a hydrophilic solvent.
    Type: Application
    Filed: December 5, 2019
    Publication date: July 23, 2020
    Inventor: Donald A. Wellings
  • Publication number: 20200038490
    Abstract: The invention provides a blood substitute product comprising haemoglobin and a self-assembled microparticle having an acid having two or more acid groups and an organic base in a solvent. The particle is of micron scale. The microparticle may be obtained by contacting a bis-acid and organic base in a hydrophilic solvent, wherein the acid is insoluble or sparingly soluble in the hydrophilic solvent and the organic base is soluble in a hydrophilic solvent.
    Type: Application
    Filed: October 2, 2019
    Publication date: February 6, 2020
    Inventor: Donald A. Wellings
  • Patent number: 10500140
    Abstract: The invention provides a personal care product or a home care product having self-assembled microparticles having an acid having two or more acid groups and an organic base in a solvent. The microparticles may form into a macrostructure and provide a support for carrying components of a personal care or home care composition. The particle is of micron scale. The microparticle may be obtained by contacting a bis-acid and organic base in a hydrophilic solvent, wherein the acid is insoluble or sparingly soluble in the hydrophilic solvent and the organic base is soluble in a hydrophilic solvent.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: December 10, 2019
    Assignee: Spheritech Ltd.
    Inventor: Donald A. Wellings
  • Patent number: 10471130
    Abstract: The invention provides a blood substitute product comprising haemoglobin and a self-assembled microparticle having an acid having two or more acid groups and an organic base in a solvent. The particle is of micron scale. The microparticle may be obtained by contacting a bis-acid and organic base in a hydrophilic solvent, wherein the acid is insoluble or sparingly soluble in the hydrophilic solvent and the organic base is soluble in a hydrophilic solvent.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: November 12, 2019
    Assignee: Spheritech Ltd.
    Inventor: Donald A. Wellings
  • Publication number: 20190216691
    Abstract: The invention provides a personal care product or a home care product having self-assembled microparticles having an acid having two or more acid groups and an organic base in a solvent. The microparticles may form into a macrostructure and provide a support for carrying components of a personal care or home care composition. The particle is of micron scale. The microparticle may be obtained by contacting a bis-acid and organic base in a hydrophilic solvent, wherein the acid is insoluble or sparingly soluble in the hydrophilic solvent and the organic base is soluble in a hydrophilic solvent.
    Type: Application
    Filed: September 5, 2017
    Publication date: July 18, 2019
    Inventor: Donald A. WELLINGS
  • Publication number: 20190201497
    Abstract: The invention provides a blood substitute product comprising haemoglobin and a self-assembled microparticle having an acid having two or more acid groups and an organic base in a solvent. The particle is of micron scale. The microparticle may be obtained by contacting a bis-acid and organic base in a hydrophilic solvent, wherein the acid is insoluble or sparingly soluble in the hydrophilic solvent and the organic base is soluble in a hydrophilic solvent.
    Type: Application
    Filed: September 5, 2017
    Publication date: July 4, 2019
    Inventor: Donald A. WELLINGS
  • Patent number: 10266652
    Abstract: The invention provides a non-particulate cross-linked poly-?-lysine polymer. The poly-?-lysine and cross linker are linked by amide bonds and may the cross linker has at least two functional groups capable of reacting with an alpha carbon amine of poly-?-lysine. The polymer is suitably insoluble in water and other solvents and is provided in macro form for example a sheet, article or fiber. The macro form polymer is useful in a wide range of applications including wound treatment, as a medical diagnostic comprising a particulate support and a functional material bound or retained by the support and solid phase synthesis of peptides, oligonucleotides, oligosaccharides, immobilisation of species, cell culturing and in chromatographic separation.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: April 23, 2019
    Assignee: SPHERITECH LTD.
    Inventor: Donald A. Wellings
  • Publication number: 20190023844
    Abstract: The invention provides a non-particulate cross-linked poly-?-lysine polymer. The poly-?-lysine and cross linker are linked by amide bonds and may the cross linker has at least two functional groups capable of reacting with an alpha carbon amine of poly-?-lysine. The polymer is suitably insoluble in water and other solvents and is provided in macro form for example a sheet, article or fibre. The macro form polymer is useful in a wide range of applications including wound treatment, as a medical diagnostic comprising a particulate support and a functional material bound or retained by the support and solid phase synthesis of peptides, oligonucleotides, oligosaccharides, immobilisation of species, cell culturing and in chromatographic separation.
    Type: Application
    Filed: March 15, 2018
    Publication date: January 24, 2019
    Inventor: Donald A. Wellings
  • Patent number: 9938378
    Abstract: The invention provides a non-particulate cross-linked poly-?-lysine polymer. The poly-?-lysine and cross linker are linked by amide bonds and may the cross linker has at least two functional groups capable of reacting with an alpha carbon amine of poly-?-lysine. The polymer is suitably insoluble in water and other solvents and is provided in macro form for example a sheet, article or fiber. The macro form polymer is useful in a wide range of applications including wound treatment, as a medical diagnostic comprising a particulate support and a functional material bound or retained by the support and solid phase synthesis of peptides, oligonucleotides, oligosaccharides, immobilization of species, cell culturing and in chromatographic separation.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: April 10, 2018
    Assignee: SPHERITECH LTD
    Inventor: Donald Wellings
  • Publication number: 20180036702
    Abstract: The invention provides a self-assembled microparticle having an acid having two or more acid groups and an organic base in a solvent. The microparticles may form into a macrostructure and provide a scaffold for cell culture. The particle is of micron scale. The microparticle may be obtained by contacting a bis-acid and organic base in a hydrophilic solvent, wherein the acid is insoluble or sparingly soluble in the hydrophilic solvent and the organic base is soluble in a hydrophilic solvent. The microparticles have antimicrobial activity and may be used in a wide range of consumer product applications, cell culture and medical products, such as wound dressings.
    Type: Application
    Filed: March 3, 2016
    Publication date: February 8, 2018
    Inventor: Donald A. Wellings
  • Patent number: 8906404
    Abstract: Provided herein is a three dimensional porous structure formed around an array of particles, where the particles define pores in the structure. The structure retreats away from the surface of the particles during formation, such that the particles optionally remain within the pores in the structure.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: December 9, 2014
    Assignee: Spheritech Ltd.
    Inventor: Donald A. Wellings
  • Publication number: 20140154737
    Abstract: The invention provides a cross-linked poly-?-lysine polymer. The poly-?-lysine and cross linker are linked by amide bonds and may the cross linker has at least two functional groups capable of reacting with an alpha carbon amine of poly-?-lysine. The polymer is suitably insoluble in water and other solvents and is provided in particulate form. The invention provides a particulate support comprising the cross-linked poly-?-lysine polymer and the polymer may provide the particle itself or be coated on a particle for example silica. The polymer is useful in a wide range of applications including wound treatment, as a medical diagnostic comprising a particulate support and a functional material bound or retained by the support and solid phase synthesis of peptides, oligonucleotides, oligosaccharides, immobilisation of species, cell culturing and in chromatographic separation.
    Type: Application
    Filed: April 20, 2012
    Publication date: June 5, 2014
    Applicant: SPHERITECH LTD
    Inventor: Donald Wellings
  • Publication number: 20140142198
    Abstract: The invention provides a non-particulate cross-linked poly-?-lysine polymer. The poly-?-lysine and cross linker are linked by amide bonds and may the cross linker has at least two functional groups capable of reacting with an alpha carbon amine of poly-?-lysine. The polymer is suitably insoluble in water and other solvents and is provided in macro form for example a sheet, article or fibre. The macro form polymer is useful in a wide range of applications including wound treatment, as a medical diagnostic comprising a particulate support and a functional material bound or retained by the support and solid phase synthesis of peptides, oligonucleotides, oligosaccharides, immobilisation of species, cell culturing and in chromatographic separation.
    Type: Application
    Filed: April 20, 2012
    Publication date: May 22, 2014
    Applicant: SPHERITECH LTD
    Inventor: Donald Wellings
  • Publication number: 20130267681
    Abstract: The invention discloses processes for preparing compounds comprising an ?-amino acid motif. The compounds are useful in e.g. the chemical ligation of peptides.
    Type: Application
    Filed: August 12, 2011
    Publication date: October 10, 2013
    Applicant: THE UNIVERSITY OF READING
    Inventors: Laurence Marius Harwood, Donald A. Wellings, David John Moody
  • Publication number: 20120309053
    Abstract: A 3-dimensional porous polymeric structure comprising a porous polymer structure optionally with particles within the pores of the polymer and wherein the pores have a narrow pore-size distribution. The structure may be made by closely packing particles in a zone to provide a 3-dimensional array, contacting a polymerisable monomer with the array such that the composition fills interstitial spaces between the particles and effecting polymerisation of the monomer whereby a polymer structure is formed around the particles and optionally removing the particles from the structure. The 3-dimensional porous structure may be used in solid phase synthesis, immobilisation, cell culturing and preparation of a stationary phase for chromatographic separation, as an absorbent, an insulating material or in tissue regeneration.
    Type: Application
    Filed: September 16, 2010
    Publication date: December 6, 2012
    Applicant: SPHERITECH LTD
    Inventor: Donald A. Wellings
  • Publication number: 20120237606
    Abstract: A particulate body having a hollow particle and a surface polymer disposed on the outside of the hollow particle and suitable for use in solid phase synthesis, especially production of peptides and oligonucleotides. The particulate body may be used as a chromatography stationary phase column and the buoyancy of the body allows the column to be packed efficiently from the bottom reducing the risk of damage to the stationary phase. The buoyancy of the particulate body may also allow species for example a catalyst to be suspended in a liquid phase to allow reactions, for example hydrolysis of vegetable oil and esterification to produce biodiesel to be carried out with a reduced risk of catalyst loss from a reaction zone.
    Type: Application
    Filed: September 16, 2010
    Publication date: September 20, 2012
    Applicant: SPHERITECH LTD
    Inventor: Donald A. Wellings
  • Publication number: 20060036028
    Abstract: A process for the preparation of an oligonucleotide is provided. The process comprises the assembly of an oligonucleotide attached to a solid support, wherein the solid support is prepared by a process comprising polymerisation of a monomer which comprises a protected hydroxypolyC2-4 alkyleneoxy chain attached to a polymerisable unit wherein the protected hydroxypolyC2-4 alkyleneoxy chain contains from 2 to 10 C2-4 alkyleneoxy groups and wherein the hydroxypolyC2-4 alkyleneoxy chain is protected with an acid-labile protecting group, preferably an optionally substituted trityl group.
    Type: Application
    Filed: April 25, 2003
    Publication date: February 16, 2006
    Inventors: David Moody, Donald Wellings, Paul McCormac
  • Publication number: 20050266520
    Abstract: A process is provided for the solid-phase synthesis of a peptide amide which comprises attaching a ?-nitrogen protect C?-carboxamide amino acid to a solid support by its side chain, removing the ?-nitrogen protecting group, assembling a peptide chain on said ?-nitrogen and then cleaving the assembled peptide amide from the solid support. Novel amino acid analogues, peptide amides and solid-phase supports are also provided.
    Type: Application
    Filed: May 2, 2003
    Publication date: December 1, 2005
    Inventors: David Evans, Dean Simpkin, Donald Wellings, Eric Atherton