Patents by Inventor Balgopal Gangadharan

Balgopal Gangadharan 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: 5811107
    Abstract: This invention relates to a polymer-based cleanser for superficial and deep cleansing of skin.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: September 22, 1998
    Assignee: SmithKline Beecham Corporation
    Inventors: Balgopal Gangadharan, Marshall A. Hayward
  • Patent number: 5643582
    Abstract: This invention is a long acting moisturizer particularly suited for moisturizing the epithelia.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: July 1, 1997
    Assignee: SmithKline Beecham Corporation
    Inventors: Balgopal Gangadharan, Marshall A. Hayward, Denise Lynne Ward
  • Patent number: 5147941
    Abstract: According to this invention, there is provided a denture adhesive which is a mixed partial salt of a copolymer of maleic anhydride and acrylic acid (or methacrylic acid), optionally including a C.sub.1 -C.sub.4 alkyl vinyl ether, having a weight average molecular weight of about 30,000 to 400,000, preferably about 50,000 to 350,000. The copolymer comprises about 10 to 70 mole percent, preferably 20 to 60 mole percent, of maleic anhydride, about 30 to 90 mole percent, preferably 40 to 80 percent, of acrylic acid (or methacrylic acid), and 0 to 25 mole percent of a C.sub.1 -C.sub.4 alkyl vinyl ether.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: September 15, 1992
    Assignee: ISP Investments Inc.
    Inventors: Mohammed Tazi, Robert B. Login, Krystyna Plochocka, Rama K. Haldar, Balgopal Gangadharan, William E. Prosise
  • Patent number: 5066709
    Abstract: This invention relates to superior bioadhesive compositions having time extended adhesive properties comprising a non-toxic carrier and a polymer having between about 45 and about 70 weight % of units having the structure ##STR1## between about 50 and about 30 weight % of units having the structure ##STR2## and 2 to 7 weight % of an amine salt containing a lactam functionally derived from A and/or B, wherein R is hydrogen, alkoxy, phenyl, carboxy or --N lactam having from 3 to 6 carbon atoms; R.sub.1 is C.sub.1 to C.sub.6 alkylene and R.sub.2 is C.sub.2 to C.sub.4 alkylene; said copolymer having a number average molecular weight of about 40,000 to about 500,000 and a relatively small particle size. The invention also relates to the method of synthesizing and using the above composition.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: November 19, 1991
    Assignee: GAF Chemicals Corporation
    Inventors: Ratan K. Chaudhuri, Rama K. Haldar, Balgopal Gangadharan
  • Patent number: 5055046
    Abstract: This invention relates to superior bioadhesive compositions having time extended adhesive properties comprising a non-toxic carrier and a polymer having between about 45 and about 70 weight % of units having the structure ##STR1## between about 50 and about 30 weight % of units having the structure ##STR2## and 2 and 7 weight % of an amine salt containing a lactam functionality derived from A and/or B, wherein R is hydrogen, alkoxy, phenyl, carboxyl or --N lactam having from 3 to 6 carbon atoms; R.sub.1 is C.sub.1 to C.sub.6 alkylene and R.sub.2 is C.sub.2 to C.sub.4 alkylene; said copolymer having a number average molecular weight of about 40,000 to about 500,000 and a relatively small particle size. The invention also relates to the method of synthesizing and using the above composition.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: October 8, 1991
    Assignee: ISP Investments Inc.
    Inventors: Ratan K. Chaudhuri, Rama K. Haldar, Balgopal Gangadharan
  • Patent number: 5037924
    Abstract: According to this invention, there is provided a denture adhesive which is a mixed partial salt of a terpolymer of maleic anhydride, (MA) a C.sub.1 -C.sub.4 alkyl vinyl ether (AVE) and isobutylene (IB) vinyl ether, having a weight average molecular weight of about 30,000 to 400,000, preferably about 50,000 to 350,000. The terpolymer has its components in the molar ratio of MA:AVE:IB of about 1:0.4-0.9:0.1-0.6, preferably about 1:0.5-0.8-0.2-0.5.
    Type: Grant
    Filed: July 25, 1990
    Date of Patent: August 6, 1991
    Assignee: GAF Chemicals Corporation
    Inventors: Mohammed Tazi, Robert B. Login, Yoon T. Kwak, Balgopal Gangadharan, Rama K. Haldar
  • Patent number: 4910247
    Abstract: A composition containing an adhesive suitable for affixing dentures or ostomy devices to a mucous membrane, which adhesive is a mixture composed of(a) 75-25 wt. % of a blend comprising a divalent calcium salt and a monovalent sodium salt of a lower alkyl vinyl ether/maleic acid copolymer wherein the concentration of Ca is between about 10 and 15 wt. % of the blend; Na is between about 1.5 and about 4 wt. % of the blend and --COOH is between about 9 and about 25 wt. % of the blend;(b) 0-10 wt. % of a lower alkyl vinyl ether/maleic acid auxiliary metal salt wherein said metal is divalent magnesium and/or monovalent potassium and wherein said auxiliary metal represents between about 1.5 and about 15 wt. % of said auxiliary metal salt compound and(c) 25-75 wt. % of a stearic acid metal salt wherein said metal salt is magnesium stearate containing from 0% to about 75% sodium stearate.The invention also relates to the use of said composition as an adhesive used in association with mucous membranes.
    Type: Grant
    Filed: March 27, 1989
    Date of Patent: March 20, 1990
    Assignee: GAF Chemicals Corporation
    Inventors: Rama K. Haldar, Balgopal Gangadharan, Ratan K. Chaudhuri