Patents by Inventor Sandip K. Nandy

Sandip K. Nandy 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).

  • Series of Skin-Whitening (Lightening) Compounds
    Publication number: 20230399282
    Abstract: The present invention is directed to inhibitors of tyrosinase, pharmaceutical compositions comprising such tyrosinase inhibitors, and methods of making and using the same. Specifically, included in the present invention are compositions of matter comprised of at least one 2,4-dihydroxybenzene analog, which inhibit the activity of tyrosinase and which inhibit the overproduction of melanin.
    Type: Application
    Filed: August 28, 2023
    Publication date: December 14, 2023
    Applicant: Unigen, Inc.
    Inventors: Sandip K. Nandy, Jiyun Liu, Alexandre Mikhailovitch Nesterov, Carmen Hertel, Abeysinghe Arrachchigae Papmapiya
  • Series of skin-whitening (lightening) compounds
    Patent number: 11739040
    Abstract: The present invention is directed to inhibitors of tyrosinase, pharmaceutical compositions comprising such tyrosinase inhibitors, and methods of making and using the same. Specifically, included in the present invention are compositions of matter comprised of at least one 2,4-dihydroxybenzene analog, which inhibit the activity of tyrosinase and which inhibit the overproduction of melanin.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: August 29, 2023
    Assignee: Unigen, Inc.
    Inventors: Sandip K. Nandy, Jiyun Liu, Alexandre Mikhailovitch Nesterov, Carmen Hertel, Abeysinghe Arrachchigae Papmapiya
  • Series of Compounds for Treatment of Skin Diseases and Other Conditions
    Publication number: 20220411356
    Abstract: Compounds and methods related to the prevention and treatment of diseases and conditions, some of which are facilitated by melanogenesis are disclosed. Specifically, the present subject matter includes a series of compounds and compositions and their use for anti-melanogenic and antioxidant activity. This subject matter also includes the treatment of skin disorder due to acne vulgaris and related inflammatory and post inflammatory hyperpigmentation. Methods for synthesizing contemplated compounds are also disclosed.
    Type: Application
    Filed: August 14, 2022
    Publication date: December 29, 2022
    Applicant: Unigen, Inc.
    Inventors: Sandip K. Nandy, Teresa Horm, Kelly Rose Dawkins
  • Series of compounds for treatment of skin diseases and other conditions
    Patent number: 11414366
    Abstract: Compounds and methods related to the prevention and treatment of diseases and conditions, some of which are facilitated by melanogenesis are disclosed. Specifically, the present subject matter includes a series of compounds and compositions and their use for anti-melanogenic and antioxidant activity. This subject matter also includes the treatment of skin disorder due to acne vulgaris and related inflammatory and post inflammatory hyperpigmentation. Methods for synthesizing contemplated compounds are also disclosed.
    Type: Grant
    Filed: October 13, 2019
    Date of Patent: August 16, 2022
    Assignee: Unigen, Inc.
    Inventors: Sandip K. Nandy, Teresa Horm, Kelly Rose Dawkins
  • Series of Skin-Whitening (Lightening) Compounds
    Publication number: 20210188751
    Abstract: The present invention is directed to inhibitors of tyrosinase, pharmaceutical compositions comprising such tyrosinase inhibitors, and methods of making and using the same. Specifically, included in the present invention are compositions of matter comprised of at least one 2,4-dihydroxybenzene analog, which inhibit the activity of tyrosinase and which inhibit the overproduction of melanin.
    Type: Application
    Filed: March 8, 2021
    Publication date: June 24, 2021
    Applicant: Unigen, Inc.
    Inventors: Sandip K. Nandy, Jiyun Liu, Alexandre Mikhailovitch Nesterov, Carmen Hertel, Abeysinghe Arrachchigae Papmapiya
  • Series of skin whitening (lightening) compounds
    Patent number: 10941098
    Abstract: The present invention is directed to inhibitors of tyrosinase, pharmaceutical compositions comprising such tyrosinase inhibitors, and methods of making and using the same. Specifically, included in the present invention are compositions of matter comprised of at least one 2,4-dihydroxybenzene analog, which inhibit the activity of tyrosinase and which inhibit the overproduction of melanin.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: March 9, 2021
    Assignee: Unigen, Inc.
    Inventors: Sandip K. Nandy, Jiyun Liu, Alexandre Mikhailovitch Nesterov, Carmen Hertel, Abeysinghe Arrachchigae Papmapiya
  • Series of Compounds for Treatment of Skin Diseases and Other Conditions
    Publication number: 20200115307
    Abstract: Compounds and methods related to the prevention and treatment of diseases and conditions, some of which are facilitated by melanogenesis are disclosed. Specifically, the present subject matter includes a series of compounds and compositions and their use for anti-melanogenic and antioxidant activity. This subject matter also includes the treatment of skin disorder due to acne vulgaris and related inflammatory and post inflammatory hyperpigmentation. Methods for synthesizing contemplated compounds are also disclosed.
    Type: Application
    Filed: October 13, 2019
    Publication date: April 16, 2020
    Applicant: Unigen, Inc.
    Inventors: Sandip K. Nandy, Teresa Horm, Kelly Rose Dawkins
  • Series of Skin Whitening (Lightening) Compounds
    Publication number: 20190233359
    Abstract: The present invention is directed to inhibitors of tyrosinase, pharmaceutical compositions comprising such tyrosinase inhibitors, and methods of making and using the same. Specifically, included in the present invention are compositions of matter comprised of at least one 2,4-dihydroxybenzene analog, which inhibit the activity of tyrosinase and which inhibit the overproduction of melanin.
    Type: Application
    Filed: April 10, 2019
    Publication date: August 1, 2019
    Applicant: Unigen, Inc.
    Inventors: Sandip K. Nandy, Jiyun Liu, Alexandre Mikhailovitch Nesterov, Carmen Hertel, Abeysinghe Arrachchigae Papmapiya
  • Series of skin whitening (lightening) compounds
    Patent number: 10259764
    Abstract: The present invention is directed to inhibitors of tyrosinase, pharmaceutical compositions comprising such tyrosinase inhibitors, and methods of making and using the same. Specifically, included in the present invention are compositions of matter comprised of at least one 2,4-dihydroxybenzene analog, which inhibit the activity of tyrosinase and which inhibit the overproduction of melanin.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: April 16, 2019
    Assignee: Unigen, Inc.
    Inventors: Sandip K. Nandy, Jiyun Liu, Alexandre Mikhailovitch Nesterov, Carmen Hertel, Abeysinghe Arrachchigae Papmapiya
  • Series of Skin Whitening (Lightening) Compounds
    Publication number: 20170275224
    Abstract: The present invention is directed to inhibitors of tyrosinase, pharmaceutical compositions comprising such tyrosinase inhibitors, and methods of making and using the same. Specifically, included in the present invention are compositions of matter comprised of at least one 2,4-dihydroxybenzene analog, which inhibit the activity of tyrosinase and which inhibit the overproduction of melanin.
    Type: Application
    Filed: June 12, 2017
    Publication date: September 28, 2017
    Applicant: Unigen, Inc.
    Inventors: Sandip K. Nandy, Jiyun Liu, Alexandre Mikhailovitch Nesterov, Carmen Hertel, Abeysinghe Arrachchigae Papmapiya
  • Series of skin-whitening (lightening) compounds
    Patent number: 9682910
    Abstract: The present invention is directed to inhibitors of tyrosinase, pharmaceutical compositions comprising such tyrosinase inhibitors, and methods of making and using the same. Specifically, included in the present invention are compositions of matter comprised of at least one 2,4-dihydroxybenzene analog, which inhibit the activity of tyrosinase and which inhibit the overproduction of melanin.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: June 20, 2017
    Assignee: Unigen, Inc.
    Inventors: Sandip K. Nandy, Jiyun Liu, Alexandre Mikhailovitch Nesterov, Carmen Hertel, Abeysinghe Arrachchigae Papmapiya
  • COMPOUNDS AND METHODS FOR PREPARATION OF DIARYLPROPANES
    Publication number: 20160096795
    Abstract: Compounds of structure (I): including stereoisomers, tautomers and salts thereof, wherein R1, R2, R3, R4, R5, R6, X, Y and Z are as defined herein. Such compounds are useful for the preparation of diarylpropane compounds. Methods for the preparation of compounds of structure (I) are also disclosed, as are methods employing compounds of structure (I) for the preparation of diarylpropanes.
    Type: Application
    Filed: April 29, 2015
    Publication date: April 7, 2016
    Inventors: Sandip K. Nandy, Abeysinghe Arrachchigae Padmapriya
  • SERIES OF SKIN-WHITENING (LIGHTENING) COMPOUNDS
    Publication number: 20160083322
    Abstract: The present invention is directed to inhibitors of tyrosinase, pharmaceutical compositions comprising such tyrosinase inhibitors, and methods of making and using the same. Specifically, included in the present invention are compositions of matter comprised of at least one 2,4-dihydroxybenzene analog, which inhibit the activity of tyrosinase and which inhibit the overproduction of melanin.
    Type: Application
    Filed: June 25, 2015
    Publication date: March 24, 2016
    Applicant: Unigen, Inc.
    Inventors: Sandip K. Nandy, Jiyun Liu, Alexandre Mikhailovitch Nesterov, Carmen Hertel, Abeysinghe Arrachchigae Papmapiya
  • Series of skin whitening (lightening) compounds
    Patent number: 9096507
    Abstract: The present invention is directed to inhibitors of tyrosinase, pharmaceutical compositions comprising such tyrosinase inhibitors, and methods of making and using the same. Specifically, included in the present invention are compositions of matter comprised of at least one 2,4-dihydroxybenzene analog, which inhibit the activity of tyrosinase and which inhibit the overproduction of melanin.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: August 4, 2015
    Assignee: Unigen, Inc.
    Inventors: Sandip K. Nandy, Jiyun Liu, Alexandre Mikhailovitch Nesterov, Carmen Hertel, Abeysinghe A. Padmapriya
  • Compounds and methods for preparation of diarylpropanes
    Patent number: 9045405
    Abstract: Compounds of structure (I): including stereoisomers, tautomers and salts thereof, wherein R1, R2, R3, R4, R5, R6, X, Y and Z are as defined herein. Such compounds are useful for the preparation of diarylpropane compounds. Methods for the preparation of compounds of structure (I) are also disclosed, as are methods employing compounds of structure (I) for the preparation of diarylpropanes.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: June 2, 2015
    Assignee: Unigen, Inc.
    Inventors: Sandip K. Nandy, Abeysinghe Arrachchigae Padmapriya
  • SERIES OF SKIN WHITENING (LIGHTENING) COMPOUNDS
    Publication number: 20140363388
    Abstract: The present invention is directed to inhibitors of tyrosinase, pharmaceutical compositions comprising such tyrosinase inhibitors, and methods of making and using the same. Specifically, included in the present invention are compositions of matter comprised of at least one 2,4-dihydroxybenzene analog, which inhibit the activity of tyrosinase and which inhibit the overproduction of melanin.
    Type: Application
    Filed: January 13, 2014
    Publication date: December 11, 2014
    Applicant: UNIGEN, INC.
    Inventors: Sandip K. Nandy, Jiyun Liu, Alexandre Mikhailovitch Nesterov, Carmen Hertel, Abeysinghe A. Padmapriya
  • COMPOUNDS AND METHODS FOR PREPARATION OF DIARYLPROPANES
    Publication number: 20140235899
    Abstract: Compounds of structure (I): including stereoisomers, tautomers and salts thereof, wherein R1, R2, R3, R4, R5, R6, X, Y and Z are as defined herein. Such compounds are useful for the preparation of diarylpropane compounds. Methods for the preparation of compounds of structure (I) are also disclosed, as are methods employing compounds of structure (I) for the preparation of diarylpropanes.
    Type: Application
    Filed: October 16, 2013
    Publication date: August 21, 2014
    Applicant: Unigen, Inc.
    Inventors: Sandip K. Nandy, Abeysinghe Arrachchigae Padmapriya
  • Series of skin whitening (lightening) compounds
    Patent number: 8658838
    Abstract: The present invention is directed to inhibitors of tyrosinase, pharmaceutical compositions comprising such tyrosinase inhibitors, and methods of making and using the same. Specifically, included in the present invention are compositions of matter comprised of at least one 2,4-dihydroxybenzene analog, which inhibit the activity of tyrosinase and which inhibit the overproduction of melanin.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: February 25, 2014
    Assignee: Unigen, Inc.
    Inventors: Sandip K. Nandy, Jiyun Liu, Alexandre Mikhailovitch Nesterov, Carmen Hertel, Abeysinghe A. Padmapriya
  • Compounds and methods for preparation of diarylpropanes
    Patent number: 8586799
    Abstract: Compounds of structure (I): including stereoisomers, tautomers and salts thereof, wherein R1, R2, R3, R4, R5, R6, X, Y and Z are as defined herein. Such compounds are useful for the preparation of diarylpropane compounds. Methods for the preparation of compounds of structure (I) are also disclosed, as are methods employing compounds of structure (I) for the preparation of diarylpropanes.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: November 19, 2013
    Assignee: Unigen, Inc.
    Inventors: Sandip K. Nandy, Abeysinghe Arrachchigae Padmapriya
  • Series of skin whitening (lightening) compounds
    Patent number: 8362305
    Abstract: The present invention is directed to inhibitors of tyrosinase, pharmaceutical compositions comprising such tyrosinase inhibitors, and methods of making and using the same. Specifically, included in the present invention are compositions of matter comprised of at least one 2,4-dihydroxybenzene analog, which inhibit the activity of tyrosinase and which inhibit the overproduction of melanin.
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: January 29, 2013
    Assignee: Unigen, Inc.
    Inventors: Sandip K. Nandy, Jiyun Liu, Alexandre Mikhailovitch Nesterov, Carmen Hertel, Abeysinghe A. Padmapriya