Patents by Inventor Nishith Merchant
Nishith Merchant 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).
-
Publication number: 20230085173Abstract: The present invention relates to methods for purifying bacterial polysaccharides, in particular for removing impurities from cellular lysates of bacteria producing polysaccharides, comprising: a) acid hydrolysis; b) a first ultrafiltration/diafiltration-(UFDF-1); b) carbon filtration; c) chromatography; and d) a second ultrafiltration/diafiltration-(UFDF-2).Type: ApplicationFiled: February 17, 2021Publication date: March 16, 2023Inventors: Ling Chu, Wei Chen, Nishith Merchant, Justin Keith Moran
-
Publication number: 20230000966Abstract: In one aspect, the invention relates to a polypeptide derived from E. coli and a fragment thereof, including compositions and methods thereof. Also disclosed herein are compositions that include a polypeptide derived from E. coli and a fragment thereof; and modified O-polysaccharide molecules derived from E. coli lipopolysaccharides and conjugates thereof. In a further aspect, disclosed herein are mammalian host cells that include sequence(s) encoding a polypeptide derived from E. coli or fragments thereof.Type: ApplicationFiled: October 28, 2020Publication date: January 5, 2023Inventors: Annaliesa Sybil Anderson, Ye Che, Wei Chen, Laurent Oliver Chorro, Ling Chu, Robert G.K. Donald, Matthew Curtis Griffor, Jianxin Gu, Zeqiang Guan, Jin-Hwan Kim, Srinivas Kodali, Scott Ellis Lomberk, Jason Arnold Lotvin, Nishith Merchant, Justin Keith Moran, Rosalind Pan, Avvari Krishna Prasad, Mark Edward Ruppen, Suddham Singh, David Robert Stead, Karen Kiyoko Takane
-
Publication number: 20220168410Abstract: In one aspect, the invention relates to an immunogenic composition comprising modified O-polysaccharide molecules derived from E. coli lipopolysaccharides and conjugates thereof. Multivalent vaccines may be prepared by combining two or more monovalent immunogenic compositions for different E. coli serotypes. In one embodiment, the modified O-polysaccharide molecules are produced by a recombinant bacterium that includes a wzz gene.Type: ApplicationFiled: February 15, 2022Publication date: June 2, 2022Applicant: Pfizer Inc.Inventors: Robert G.K. Donald, Annaliesa Sybil Anderson, Laurent Oliver Chorro, Jianxin Gu, Jin-Hwan Kim, Srinivas Kodali, Jason Arnold Lotvin, Justin Keith Moran, Rosalind Pan, Avvari Krishna Prasad, Mark Edward Ruppen, Suddham Singh, Ling Chu, Scott Ellis Lomberk, Karen Kiyoko Takane, Nishith Merchant, Wei Chen
-
Publication number: 20220136020Abstract: The present invention relates to methods for purifying bacterial polysaccharides, in particular for removing impurities from cellular lysates of bacteria producing polysaccharides.Type: ApplicationFiled: February 20, 2020Publication date: May 5, 2022Applicant: Pfizer Inc.Inventors: Ling Chu, Scott Andrew Cook, Nishith Merchant, Justin Keith Moran
-
Patent number: 11260119Abstract: In one aspect, the invention relates to an immunogenic composition comprising modified O-polysaccharide molecules derived from E. coli lipopolysaccharides and conjugates thereof. Multivalent vaccines may be prepared by combining two or more monovalent immunogenic compositions for different E. coli serotypes. In one embodiment, the modified O-polysaccharide molecules are produced by a recombinant bacterium that includes a wzz gene.Type: GrantFiled: August 7, 2019Date of Patent: March 1, 2022Assignee: Pfizer Inc.Inventors: Robert G. K. Donald, Annaliesa Sybil Anderson, Laurent Oliver Chorro, Jianxin Gu, Jin-Hwan Kim, Srinivas Kodali, Jason Arnold Lotvin, Justin Keith Moran, Rosalind Pan, Avvari Krishna Prasad, Mark Edward Ruppen, Suddham Singh, Ling Chu, Scott Ellis Lomberk, Karen Kiyoko Takane, Nishith Merchant, Wei Chen
-
Publication number: 20200061177Abstract: In one aspect, the invention relates to an immunogenic composition comprising modified O-polysaccharide molecules derived from E. coli lipopolysaccharides and conjugates thereof. Multivalent vaccines may be prepared by combining two or more monovalent immunogenic compositions for different E. coli serotypes. In one embodiment, the modified O-polysaccharide molecules are produced by a recombinant bacterium that includes a wzz gene.Type: ApplicationFiled: August 7, 2019Publication date: February 27, 2020Inventors: Robert G.K. Donald, Annaliesa Sybil Anderson, Laurent Oliver Chorro, Jianxin Gu, Jin-Hwan Kim, Srinivas Kodali, Jason Arnold Lotvin, Justin Keith Moran, Rosalind Pan, Avvari Krishna Prasad, Mark Edward Ruppen, Suddham Singh, Ling Chu, Scott Ellis Lomberk, Karen Kiyoko Takane, Nishith Merchant, Wei Chen
-
Publication number: 20180339058Abstract: Methods for preparing monomeric cytotoxic drug/carrier conjugates with a drug loading significantly higher than in previously reported procedures and with decreased aggregation and low conjugate fraction (LCF) are described. Cytotoxic drug derivative/antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described. Monomeric calicheamicin derivative/anti-CD22 antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described.Type: ApplicationFiled: July 30, 2018Publication date: November 29, 2018Applicant: Wyeth Holdings LLCInventors: Arthur KUNZ, Justin Keith Moran, Joseph Thomas Rubino, Neera Jain, Eugene Joseph Vidunas, John McLean Simpson, Nishith Merchant, John Francis Dijoseph, Mark Edward Ruppen, Nitin Krishnaji Damle, Paul David Robbins, Andrew George Popplewell
-
Publication number: 20160303252Abstract: Methods for preparing monomeric cytotoxic drug/carrier conjugates with a drug loading significantly higher than in previously reported procedures and with decreased aggregation and low conjugate fraction (LCF) are described. Cytotoxic drug derivative/antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described. Monomeric calicheamicin derivative/anti-CD22 antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described.Type: ApplicationFiled: May 3, 2016Publication date: October 20, 2016Applicant: Wyeth Holdings LLCInventors: Arthur Kunz, Justin Keith Moran, Joseph Thomas Rubino, Neera Jain, Eugene Joseph Vidunas, John McLean Simpson, Nishith Merchant, John Francis Dijoseph, Mark Edward Ruppen, Nitin Krishnaji Damle, Paul David Robbins, Andrew George Popplewell
-
Patent number: 9351986Abstract: Methods for preparing monomeric cytotoxic drug/carrier conjugates with a drug loading significantly higher than in previously reported procedures and with decreased aggregation and low conjugate fraction (LCF) are described. Cytotoxic drug derivative/antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described. Monomeric calicheamicin derivative/anti-CD22 antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described.Type: GrantFiled: March 7, 2014Date of Patent: May 31, 2016Assignee: WYETH HOLDINGS LLCInventors: Arthur Kunz, Justin Keith Moran, Joseph Thomas Rubino, Neera Jain, Eugene Joseph Vidunas, John McLean Simpson, Nishith Merchant, John Francis DiJoseph, Mark Edward Ruppen, Nitin Krishnaji Damle, Paul David Robbins, Andrew George Popplewell
-
Patent number: 8835611Abstract: Methods for preparing monomeric cytotoxic drug/carrier conjugates with a drug loading significantly higher than in previously reported procedures and with decreased aggregation and low conjugate fraction (LCF) are described. Cytotoxic drug derivative/antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described. Monomeric calicheamicin derivative/anti-CD22 antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described.Type: GrantFiled: February 13, 2012Date of Patent: September 16, 2014Assignee: Wyeth Holdings LLCInventors: Arthur Kunz, Justin Keith Moran, Joseph Thomas Rubino, Neera Jain, Eugene Joseph Vidunas, John McLean Simpson, Paul David Robbins, Nishith Merchant, John Francis Dijoseph, Mark Edward Ruppen, Nitin Krishnaji Damle, Andrew George Popplewell
-
Publication number: 20140235835Abstract: Methods for preparing monomeric cytotoxic drug/carrier conjugates with a drug loading significantly higher than in previously reported procedures and with decreased aggregation and low conjugate fraction (LCF) are described. Cytotoxic drug derivative/antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described. Monomeric calicheamicin derivative/anti-CD22 antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described.Type: ApplicationFiled: March 7, 2014Publication date: August 21, 2014Applicant: WYETH HOLDINGS LLCInventors: ARTHUR KUNZ, Justin Keith Moran, Joseph Thomas Rubino, Neera Jain, Eugene Joseph Vidunas, John McLean Simpson, Nishith Merchant, John Francis Dijoseph, Mark Edward Ruppen, Nitin Krishnaji Damle, Paul David Robbins, Andrew George Popplewell
-
Patent number: 8747857Abstract: Methods for preparing monomeric cytotoxic drug/carrier conjugates with a drug loading significantly higher than in previously reported procedures and with decreased aggregation and low conjugate fraction (LCF) are described. Cytotoxic drug derivative/antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described. Monomeric calicheamicin derivative/anti-CD22 antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described.Type: GrantFiled: November 3, 2003Date of Patent: June 10, 2014Assignee: Wyeth Holdings LLCInventors: Arthur Kunz, Justin Keith Moran, Joseph Thomas Rubino, Neera Jain, Eugene Joseph Vidunas, John McLean Simpson, Nishith Merchant, John Francis Dijoseph, Mark Edward Ruppen, Nitin Krishnaji Damle, Paul David Robbins, Andrew George Popplewell
-
Publication number: 20120213804Abstract: Methods for preparing monomeric cytotoxic drug/carrier conjugates with a drug loading significantly higher than in previously reported procedures and with decreased aggregation and low conjugate fraction (LCF) are described. Cytotoxic drug derivative/antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described. Monomeric calicheamicin derivative/anti-CD22 antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described.Type: ApplicationFiled: February 13, 2012Publication date: August 23, 2012Applicant: WYETH HOLDINGS CORPORATIONInventors: ARTHUR KUNZ, Justin Keith Moran, Joseph Thomas Rubino, Neera Jain, Eugene Joseph Vidunas, John McLean Simpson, Paul David Robbins, Nishith Merchant, John Francis Dijoseph, Mark Edward Ruppen, Nitin Krishnaji Damle, Andrew George Popplewell
-
Patent number: 8153768Abstract: Methods for preparing monomeric cytotoxic drug/carrier conjugates with a drug loading significantly higher than in previously reported procedures and with decreased aggregation and low conjugate fraction (LCF) are described. Cytotoxic drug derivative/antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described. Monomeric calicheamicin derivative/anti-CD22 antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described.Type: GrantFiled: May 2, 2003Date of Patent: April 10, 2012Assignee: Wyeth Holdings CorporationInventors: Arthur Kunz, Justin Keith Moran, Joseph Thomas Rubino, Neera Jain, Eugene Joseph Vidunas, John McLean Simpson, Paul David Robbins, Nishith Merchant, John Francis DiJoseph, Mark Edward Ruppen, Nitin Krishnaji Damle, Andrew George Popplewell
-
Publication number: 20040192900Abstract: Methods for preparing monomeric cytotoxic drug/carrier conjugates with a drug loading significantly higher than in previously reported procedures and with decreased aggregation and low conjugate fraction (LCF) are described. Cytotoxic drug derivative/antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described. Monomeric calicheamicin derivative/anti-CD22 antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described.Type: ApplicationFiled: November 3, 2003Publication date: September 30, 2004Applicant: Wyeth Holdings CorporationInventors: Arthur Kunz, Justin Keith Moran, Joseph Thomas Rubino, Neera Jain, Eugene Joseph Vidunas, John McLean Simpson, Nishith Merchant, John Francis DiJoseph, Mark Edward Ruppen, Nitin Krishnaji Damle, Paul David Robbins, Andrew George Popplewell
-
Publication number: 20040082764Abstract: Methods for preparing monomeric cytotoxic drug/carrier conjugates with a drug loading significantly higher than in previously reported procedures and with decreased aggregation and low conjugate fraction (LCF) are described. Cytotoxic drug derivative/antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described. Monomeric calicheamicin derivative/anti-CD22 antibody conjugates, compositions comprising the conjugates and uses of the conjugates are also described.Type: ApplicationFiled: May 2, 2003Publication date: April 29, 2004Applicant: Wyeth Holdings CorporationInventors: Arthur Kunz, Justin Keith Moran, Joseph Thomas Rubino, Neera Jain, Eugene Joseph Vidunas, John McLean Simpson, Paul David Robbins, Nishith Merchant, John Francis DiJoseph, Mark Edward Ruppen, Nitin Krishnaji Damle, Andrew George Popplewell
-
Patent number: 6451505Abstract: An imageable element comprises: (A) a substrate; and (B) an imageable composition applied to the substrate comprising: (1) a first layer, comprising: (a) a photosensitive composition capable of absorbing actinic radiation; and (b) a photothermal converter; and (2) an ablatable second layer contiguous to the first layer, wherein the second layer is opaque to the actinic radiation. This imageable element advantageously is useful in both positive and negative working printing plate applications, increases the efficiency of use of mask-generating radiation such as IR radiation and eliminates the need for chemicals and additional time to create a mask.Type: GrantFiled: August 4, 2000Date of Patent: September 17, 2002Assignee: Kodak Polychrome Graphics LLCInventors: Jayanti Patel, Ken-Ichi Shimazu, Jianbing Huang, Nishith Merchant, S. Peter Pappas
-
Patent number: 6352812Abstract: A thermal lithographic printing plate, which can be imaged by thermal energy typically by imagewise exposure with an infrared emitting laser, a thermal printing head, etc., is made up of a hydrophilic substrate, and a composite layer structure composed of two layer coatings. Preferably, the first layer of the composite is composed of an aqueous developable polymer mixture containing a photothermal conversion material which is contiguous to the hydrophilic substrate. The second layer of the composite is composed of one or more non-aqueous soluble polymers which are soluble or dispersible in a solvent which does not dissolve the first layer. The plate is exposed with an infrared laser or a thermal print head, and upon aqueous development of the imaged plate, the exposed portions are removed exposing hydrophilic substrate surfaces receptive to conventional aqueous fountain solutions. The unexposed portions contain the ink-receptive image areas.Type: GrantFiled: April 29, 1999Date of Patent: March 5, 2002Assignee: Kodak Polychrome Graphics LLCInventors: Ken-Ichi Shimazu, Jayanti Patel, Shashikant Saraiya, Nishith Merchant, Celin Savariar-Hauck, Hans-Joachim Timpe, Christopher D. McCullough
-
Patent number: 6352811Abstract: A thermal lithographic printing plate, which can be imaged by thermal energy typically by imagewise exposure with an infrared emitting laser, a thermal printing head, etc., is made up of a hydrophilic substrate, and a composite layer structure composed of two layer coatings. Preferably, the first layer of the composite is composed of an aqueous developable polymer mixture containing a solubility inhibiting material and a photothermal conversion material which is contiguous to the hydrophilic substrate. The second layer of the composite is insoluble in the aqueous solution, is ink receptive, and is composed of one or more non-aqueous soluble polymers which are soluble or dispersible in a solvent which does not dissolve the first layer. The plate is exposed with an infrared laser or a thermal print head, and upon aqueous development of the imaged plate, the exposed portions are removed exposing hydrophilic substrate surfaces receptive to conventional aqueous fountain solutions.Type: GrantFiled: December 22, 1999Date of Patent: March 5, 2002Assignee: Kodak Polychrome Graphics LLCInventors: Jayanti Patel, Shahhikant Saraiya, Celin Savariar-Hauck, Jianbing Huang, Frederic Mikell, Ken-ichi Shimazu, Nishith Merchant
-
Patent number: 6294311Abstract: Imageable elements useful as lithographic printing members are disclosed. The elements contain a substrate, an underlayer, and a top layer. The underlayer contains a combination of polymeric materials that provides resistance both to fountain solution and to aggressive washes, such as a UV wash. The underlayer can be used in either thermally imageable or photochemically imageable elements.Type: GrantFiled: December 22, 1999Date of Patent: September 25, 2001Assignee: Kodak Polychrome Graphics LLCInventors: Ken-ichi Shimazu, Jayanti Patel, Jianbing Huang, Nishith Merchant, Mathias Jarek