Patents by Inventor Rajesh Kumar Kainthan
Rajesh Kumar Kainthan 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).
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Publication number: 20240033367Abstract: The present invention relates generally to glycoconjugates comprising a saccharide covalently conjugated to a carrier protein through a spacer containing ((2-oxoethyl)thio)). In an aspect the invention provides oxo-eT linked glycoconjugates comprising a saccharide covalently conjugated to a carrier protein through a ((2-oxoethyl)thio) spacer having the formula (I): wherein: A is a group (C?X)m wherein X is S or O and m is 0 or 1; B is a bond, O, or CH2; and when m is 0, B can also be (C?O); R is a C2-C16 alkylene, C2-C16 heteroakylene, NH—C(?O)—C2-C16 alkylene, or NH—C(?O)—C2-C16 heteroakylene, wherein said alkylene and heteroalkylene are optionally substituted by 1, 2 or 3 groups independently selected from COOR? where R? is selected from H, methyl, ethyl or propyl. The invention further relates to immunogenic compositions comprising such glycoconjugates, and to methods for the preparation and use of such glycoconjugates and immunogenic compositions.Type: ApplicationFiled: June 6, 2023Publication date: February 1, 2024Inventors: Jianxin Gu, Rajesh Kumar Kainthan, Jin-Hwan Kim, Avvari Krishna Prasad, Yu-Ying Yang
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Patent number: 11872274Abstract: The present invention relates to new immunogenic compositions comprising conjugated Streptococcus pneumoniae capsular saccharide antigens (glycoconjugates) and uses thereof. Immunogenic compositions of the present invention will typically comprise at least one glycoconjugate from a S. pneumoniae serotype not found in PREVNAR®, SYNFLORIX® and/or PREVNAR 13®. The invention also relates to vaccination of human subjects, in particular infants and elderly, against pneumococcal infections using said novel immunogenic compositions.Type: GrantFiled: March 6, 2021Date of Patent: January 16, 2024Assignee: Pfizer Inc.Inventors: Emilio Anthony Emini, Wendy Jo Watson, Avvari Krishna Prasad, Mingming Han, Jin-Hwan Kim, Jianxin Gu, Yu-Ying Yang, Rajesh Kumar Kainthan, David Cooper, Michael William Pride, Kathrin Ute Jansen
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Publication number: 20230346903Abstract: The invention relates to immunogenic polysaccharide-protein conjugates comprising a capsular polysaccharide (CP) from Streptococcus agalactiae, commonly referred to as group B streptococcus (GBS), and a carrier protein, wherein the CP is selected from the group consisting of serotypes Ia, Ib, II, III, IV, V, VI, VII, VIII, and IX, and wherein the CP has a sialic acid level of greater than about 60%. The invention also relates to methods of making the conjugates and immunogenic compositions comprising the conjugates. The invention also relates to immunogenic compositions comprising polysaccharide-protein conjugates, wherein the conjugates comprise a CP from GBS serotype IV and at least one additional serotype. The invention further relates to methods for inducing an immune response in subjects against GBS and/or for reducing or preventing invasive GBS disease in subjects using the compositions disclosed herein. The resulting antibodies can be used to treat or prevent GBS infection via passive immunotherapy.Type: ApplicationFiled: December 1, 2022Publication date: November 2, 2023Applicant: Pfizer Inc.Inventors: Annaliesa Sybil Anderson, Amardeep Singh Bhupender Bhalla, Robert G.K. Donald, Jianxin Gu, Kathrin Ute Jansen, Rajesh Kumar Kainthan, Lakshmi Khandke, Jin-Hwan Kim, Paul Liberator, Avvari Krishna Prasad, Mark Edward Ruppen, Ingrid Lea Scully, Suddham Singh, Cindy Xudong Yang
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Patent number: 11707529Abstract: The present invention relates generally to glycoconjugates comprising a saccharide covalently conjugated to a carrier protein through a spacer containing ((2-oxoethyl)thio)). In an aspect the invention provides oxo-eT linked glycoconjugates comprising a saccharide covalently conjugated to a carrier protein through a ((2-oxoethyl)thio) spacer having the formula (I): wherein: A is a group (C?X)m wherein X is S or O and m is 0 or 1; B is a bond, O, or CH2; and when m is 0, B can also be (C?O); R is a C2-C16 alkylene, C2-C16 heteroakylene, NH—C(?O)—C2-C16 alkylene, or NH—C(?O)—C2-C16 heteroakylene, wherein said alkylene and heteroalkylene are optionally substituted by 1, 2 or 3 groups independently selected from COOR? where R? is selected from H, methyl, ethyl or propyl. The invention further relates to immunogenic compositions comprising such glycoconjugates, and to methods for the preparation and use of such glycoconjugates and immunogenic compositions.Type: GrantFiled: April 20, 2020Date of Patent: July 25, 2023Assignee: Pfizer Inc.Inventors: Jianxin Gu, Rajesh Kumar Kainthan, Jin-Hwan Kim, Avvari Krishna Prasad, Yu-Ying Yang
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Publication number: 20230203091Abstract: The present disclosure relates generally to methods of preparing glycoconjugates containing a saccharide conjugated to a carrier protein by use of stable nitroxyl radical related agent/oxidant as an oxidizing agent, to immunogenic compositions comprising such glycoconjugates, and to methods for the use of such glycoconjugates and immunogenic compositions.Type: ApplicationFiled: March 1, 2023Publication date: June 29, 2023Inventors: Mingming Han, Rajesh Kumar Kainthan, Jin-Hwan Kim, Avvari Krishna Prasad
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Publication number: 20230130055Abstract: Soluble drug delivery films can exhibit an enhanced stability.Type: ApplicationFiled: October 21, 2022Publication date: April 27, 2023Applicant: AQUESTIVE THERAPEUTICS, INC.Inventors: Stephen Paul Wargacki, Rajesh Kumar Kainthan, Vincent Buono, Alexander Mark Schobel, Michael Koons, Michael Goodrich, Gregory Tsodikov
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Patent number: 11603384Abstract: The present disclosure relates generally to methods of preparing glycoconjugates containing a saccharide conjugated to a carrier protein by use of stable nitroxyl radical related agent/oxidant as an oxidizing agent, to immunogenic compositions comprising such glycoconjugates, and to methods for the use of such glycoconjugates and immunogenic compositions.Type: GrantFiled: August 12, 2021Date of Patent: March 14, 2023Assignee: Pfizer Inc.Inventors: Mingming Han, Rajesh Kumar Kainthan, Jin-Hwan Kim, Avvari Krishna Prasad
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Publication number: 20220378897Abstract: The invention relates to activated Streptococcus pneumoniae serotype 10A, 22F or 33F polysaccharides and processes for their preparation. The invention also relates to immunogenic conjugates comprising Streptococcus pneumoniae serotype 10A, 22F or 33F polysaccharides covalently linked to a carrier protein, processes for their preparation and immunogenic compositions and vaccines comprising them.Type: ApplicationFiled: July 22, 2022Publication date: December 1, 2022Applicant: Pfizer Inc.Inventors: Jianxin Gu, Rajesh Kumar Kainthan, Jin-Hwan Kim, Avvari Krishna Prasad, Yu-Ying Yang
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Patent number: 11426456Abstract: The invention relates to activated Streptococcus pneumoniae serotype 10A, 22F or 33F polysaccharides and processes for their preparation. The invention also relates to immunogenic conjugates comprising Streptococcus pneumoniae serotype 10A, 22F or 33F polysaccharides covalently linked to a carrier protein, processes for their preparation and immunogenic compositions and vaccines comprising them.Type: GrantFiled: October 1, 2020Date of Patent: August 30, 2022Assignee: Pfizer Inc.Inventors: Jianxin Gu, Rajesh Kumar Kainthan, Jin-Hwan Kim, Avvari Krishna Prasad, Yu-Ying Yang
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Publication number: 20220233471Abstract: Systems and methods of delivering a drug product by inhalation can include a prodrug composition.Type: ApplicationFiled: January 15, 2022Publication date: July 28, 2022Applicant: AQUESTIVE THERAPEUTICS, INC.Inventors: Alexander Mark SCHOBEL, Daniel R. BARBER, Stephen Paul WARGACKI, Rajesh Kumar KAINTHAN, Stephanie M. VARJAN, Malarvizhi DURAI
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Publication number: 20210371453Abstract: The present disclosure relates generally to methods of preparing glycoconjugates containing a saccharide conjugated to a carrier protein by use of stable nitroxyl radical related agent/oxidant as an oxidizing agent, to immunogenic compositions comprising such glycoconjugates, and to methods for the use of such glycoconjugates and immunogenic compositions.Type: ApplicationFiled: August 12, 2021Publication date: December 2, 2021Inventors: Mingming Han, Rajesh Kumar Kainthan, Jin-Hwan Kim, Avvari Krishna Prasad
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Patent number: 11160855Abstract: The present invention relates to new immunogenic compositions comprising conjugated Streptococcus pneumoniae capsular saccharide antigens (glycoconjugates) and uses thereof. Immunogenic compositions of the present invention will typically comprise at least one glycoconjugate from a S. pneumoniae serotype not found in PREVNAR®, SYNFLORIX® and/or PREVNAR 13®. The invention also relates to vaccination of human subjects, in particular infants and elderly, against pneumoccocal infections using said novel immunogenic compositions.Type: GrantFiled: October 6, 2016Date of Patent: November 2, 2021Assignee: Pfizer Inc.Inventors: Emilio Anthony Emini, Wendy Jo Watson, Avvari Krishna Prasad, Mingming Han, Jin-Hwan Kim, Jianxin Gu, Yu-ying Yang, Rajesh Kumar Kainthan, David Cooper, Michael William Pride, Kathrin Ute Jansen
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Patent number: 11117928Abstract: The present disclosure relates generally to methods of preparing glycoconjugates containing a saccharide conjugated to a carrier protein by use of stable nitroxyl radical related agent/oxidant as an oxidizing agent, to immunogenic compositions comprising such glycoconjugates, and to methods for the use of such glycoconjugates and immunogenic compositions.Type: GrantFiled: July 8, 2020Date of Patent: September 14, 2021Assignee: Pfizer Inc.Inventors: Mingming Han, Rajesh Kumar Kainthan, Jin-Hwan Kim, Avvari Krishna Prasad
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Patent number: 11090375Abstract: The present invention relates to new immunogenic compositions comprising conjughated Streptococcus pneumoniae capsular saccharide antigens (glycoconjugates) and uses thereof. Immunogenic compositions of the present invention will typically comprise at least one glycoconjugate from a S. pneumoniae serotype not found in PREVNAR®, SYNFLORIX® and/or PREVNAR 13®. The invention also relates to vaccination of human subjects, in particular infants and elderly, against pneumococcal infections using said novel immunogenic compositions.Type: GrantFiled: June 12, 2020Date of Patent: August 17, 2021Assignee: Pfizer Inc.Inventors: Emilio Anthony Emini, Wendy Jo Watson, Avvari Krishna Prasad, Mingming Han, Jin-Hwan Kim, Jianxin Gu, Yu-ying Yang, Rajesh Kumar Kainthan, David Cooper, Michael William Pride, Kathrin Ute Jansen
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Publication number: 20210196810Abstract: The present invention relates to new immunogenic compositions comprising conjugated Streptococcus pneumoniae capsular saccharide antigens (glycoconjugates) and uses thereof. Immunogenic compositions of the present invention will typically comprise at least one glycoconjugate from a S. pneumoniae serotype not found in PREVNAR®, SYNFLORIX® and/or PREVNAR 13®. The invention also relates to vaccination of human subjects, in particular infants and elderly, against pneumococcal infections using said novel immunogenic compositions.Type: ApplicationFiled: March 6, 2021Publication date: July 1, 2021Applicant: Pfizer Inc.Inventors: Emilio Anthony Emini, Wendy Jo Watson, Avvari Krishna Prasad, Mingming Han, Jin-Hwan Kim, Jianxin Gu, Yu-ying Yang, Rajesh Kumar Kainthan, David Cooper, Michael William Pride, Kathrin Ute Jansen
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Publication number: 20210145957Abstract: The invention relates to immunogenic polysaccharide-protein conjugates comprising a capsular polysaccharide (CP) from Streptococcus agalactiae, commonly referred to as group B. streptococcus (GBS), and a carrier protein, wherein the CP is selected from the group consisting of serotypes Ia, Ib, II, III, IV, V, VI, VII, VIII, and IX, and wherein the CP has a sialic acid level of greater than about 60%. The invention also relates to methods of making the conjugates and immunogenic compositions comprising the conjugates. The invention also relates to immunogenic compositions comprising polysaccharide-protein conjugates, wherein the conjugates comprise a CP from GBS serotype IV and at least one additional serotype. The invention further relates to methods for inducing an immune response in subjects against GBS and/or for reducing or preventing invasive GBS disease in subjects using the compositions disclosed herein. The resulting antibodies can be used to treat or prevent GBS infection via passive immunotherapy.Type: ApplicationFiled: January 28, 2021Publication date: May 20, 2021Applicant: Pfizer Inc.Inventors: Annaliesa Sybil Anderson, Amardeep Singh Bhupender Bhalla, Robert G.K. Donald, Jianxin Gu, Kathrin Ute Jansen, Rajesh Kumar Kainthan, Lakshmi Khandke, Jin-Hwan Kim, Paul Liberator, Avvari Krishna Prasad, Mark Edward Ruppen, Ingrid Lea Scully, Suddham Singh, Cindy Xudong Yang
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Publication number: 20210128511Abstract: Pharmaceutical compositions include a prodrug of epinephrine are described.Type: ApplicationFiled: November 1, 2020Publication date: May 6, 2021Applicant: AQUESTIVE THERAPEUTICS, INC.Inventors: Alexander Mark Schobel, Stephen Paul Wargacki, Stephanie M. VARJAN, Rajesh Kumar Kainthan, Malarvizhi Durai
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Patent number: 10946086Abstract: The invention relates to immunogenic polysaccharide-protein conjugates comprising a capsular polysaccharide (CP) from Streptococcus agalactiae, commonly referred to as group B streptococcus (GBS), and a carrier protein, wherein the CP is selected from the group consisting of serotypes Ia, Ib, II, III, IV, V, VI, VII, VIII, and IX, and wherein the CP has a sialic acid level of greater than about 60%. The invention also relates to methods of making the conjugates and immunogenic compositions comprising the conjugates. The invention also relates to immunogenic compositions comprising polysaccharide-protein conjugates, wherein the conjugates comprise a CP from GBS serotype IV and at least one additional serotype. The invention further relates to methods for inducing an immune response in subjects against GBS and/or for reducing or preventing invasive GBS disease in subjects using the compositions disclosed herein. The resulting antibodies can be used to treat or prevent GBS infection via passive immunotherapy.Type: GrantFiled: January 11, 2019Date of Patent: March 16, 2021Assignee: Pfizer Inc.Inventors: Annaliesa Sybil Anderson, Amardeep Singh Bhupender Bhalla, Robert G. K. Donald, Jianxin Gu, Kathrin Ute Jansen, Rajesh Kumar Kainthan, Lakshmi Khandke, Jin-Hwan Kim, Paul Liberator, Avvari Krishna Prasad, Mark Edward Ruppen, Ingrid Lea Scully, Suddham Singh, Cindy Xudong Yang
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Patent number: 10918708Abstract: The invention relates to activated Streptococcus pneumoniae serotype 10A, 22F or 33F polysaccharides and processes for their preparation. The invention also relates to immunogenic conjugates comprising Streptococcus pneumoniae serotype 10A, 22F or 33F polysaccharides covalently linked to a carrier protein, processes for their preparation and immunogenic compositions and vaccines comprising them.Type: GrantFiled: September 17, 2018Date of Patent: February 16, 2021Assignee: Pfizer Inc.Inventors: Jianxin Gu, Rajesh Kumar Kainthan, Jin-Hwan Kim, Avvari Krishna Prasad, Yu-Ying Yang
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Publication number: 20210023193Abstract: The invention relates to activated Streptococcus pneumoniae serotype 10A, 22F or 33F polysaccharides and processes for their preparation. The invention also relates to immunogenic conjugates comprising Streptococcus pneumoniae serotype 10A, 22F or 33F polysaccharides covalently linked to a carrier protein, processes for their preparation and immunogenic compositions and vaccines comprising them.Type: ApplicationFiled: October 1, 2020Publication date: January 28, 2021Applicant: Pfizer Inc.Inventors: Jianxin Gu, Rajesh Kumar Kainthan, Jin-Hwan Kim, Avvari Krishna Prasad, Yu-Ying Yang