Patents by Inventor Anunay Gupta

Anunay Gupta 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: 7157586
    Abstract: Benzotriazole UV absorbers substituted with a ultra long ester or amide moiety wherein the ester or amide group is a hydrocarbyl group of 25 to 100 carbon atoms or is a group of alkyl of 25 to 100 carbon atoms interrupted by 5 to 39 oxygen atoms and terminated with an omega-OH or an omega-OR group exhibit excellent stabilization efficacy while they concomitantly do not bloom when incorporated into polyolefin films. These benzotriazole UV absorbers also provide excellent protection to white, dyed, dipped, unscented and/or scented candle wax from discoloration and degradation.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: January 2, 2007
    Assignee: Ciba Specialty Chemcials Corporation
    Inventors: Mervin Wood, Ramanathan Ravichandran, Douglas Wayne Horsey, Anunay Gupta, Deborah DeHessa, Luther A. R. Hall, Andrea Smith, Stephen Mark Andrews
  • Patent number: 7037964
    Abstract: Polyolefin films having incorporated therein a compound of the formula CH3CH2(CH2CH2)aCH2CH2(OCH2CH2)bOH, where a is 9 to 25 and b is 1 to 10, exhibit superior long lasting fog resistance. The polyolefin films are useful as packaging film for moist products and as a greenhouse film for agricultural applications.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: May 2, 2006
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Anunay Gupta, David Devore, John James McNamara, Alessandro Zedda
  • Publication number: 20040234801
    Abstract: Polyolefin films having incorporated therein a compound of the formula CH3CH2(CH2CH2)aCH2CH2(OCH2CH2)bOH, where a is 9 to 25 and b is 1 to 10, exhibit superior long lasting fog resistance. The polyolefin films are useful as packaging film for moist products and as a greenhouse film for agricultural applications.
    Type: Application
    Filed: June 30, 2004
    Publication date: November 25, 2004
    Inventors: Anunay Gupta, David Devore, John James McNamara, Alessandro Zedda
  • Patent number: 6800678
    Abstract: Polyolefins, especially polypropylene, can be made flame retardant by the incorporation therein of a synergistic mixture of a selected hindered amine substituted by an alkoxy, cycloalkoxy or hydroxyalkoxy moiety and a selected organic or inorganic brominated and/or phosphorus containing flame retardant, such as ammonium polyphosphate or decabromodiphenyl oxide wherein the amount of organic or inorganic flame retardant required to achieve an acceptable level of flame retardancy is significantly reduced compared to that needed when the hindered amine is not present.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: October 5, 2004
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Douglas Wayne Horsey, Stephen Mark Andrews, Leonard Harris Davis, Darrell David Dyas, Jr., Robert Leo Gray, Anunay Gupta, Bruce Vincent Hein, Joseph Stephen Puglisi, Ramanathan Ravichandran, Paul Shields, Rangarajan Srinivasan
  • Patent number: 6784235
    Abstract: Polyolefin films having incorporated therein a compound of the formula CH3CH2(CH2CH2)aCH2CH2(OCH2CH2)bOH, where a is 9 to 25 and b is 1 to 10, exhibit superior long lasting fog resistance. The polyolefin films are useful as packaging film for moist products and as a greenhouse film for agricultural applications.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: August 31, 2004
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Anunay Gupta, David Devore, John James McNamara, Alessandro Zedda
  • Patent number: 6617397
    Abstract: The surface energy of polymeric substrates is increased by the application or incorporation of novel amphiphilic block copolymers. The block copolymer additives comprise a linear hydrophilic polymer or oligomer and a random hyperbranched polymer or oligomer and is completely or partially terminated with lipophilic end groups. The polymeric articles or constructions which benefit from the application or incorporation of the amphiphilic block copolymers in the areas of anti-fog, dissipation of static electricity, paintability, dyeability, printability, wicking of moisture, adhesion and polymer compatibility include carpet fibers, composite fibers, agricultural films, nonwoven coverstock, exterior automotive bumper fascia, packaging, hygienic products, incompatible polymer blends, laminated articles and eyewear.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: September 9, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: John James McNamara, Anunay Gupta, David Devore
  • Publication number: 20030149143
    Abstract: Polyolefins, especially polypropylene, can be made flame retardant by the incorporation therein of a synergistic mixture of a selected hindered amine substituted by an alkoxy, cycloalkoxy or hydroxyalkoxy moiety and a selected organic or inorganic brominated and/or phosphorus containing flame retardant, such as ammonium polyphosphate or decabromodiphenyl oxide wherein the amount of organic or inorganic flame retardant required to achieve an acceptable level of flame retardancy is significantly reduced compared to that needed when the hindered amine is not present.
    Type: Application
    Filed: July 29, 2002
    Publication date: August 7, 2003
    Inventors: Douglas Wayne Horsey, Stephen Mark Andrews, Leonard Harris Davis, Darrell David Dyas, Robert Leo Gray, Anunay Gupta, Bruce Vincent Hein, Joseph Stephen Puglisi, Ramanathan Ravichandran, Paul Shields, Rangarajan Srinivasan
  • Patent number: 6599963
    Abstract: Hindered amine compounds containing a group of the formula where G1 and G2 are independently alkyl of 1 to 4 carbon atoms or are together pentamethylene, Z1 and Z2 are each methyl, or Z1 and Z2 together form a linking moiety which may additionally be substituted by an ester, ether, amide, amino, carboxy or urethane group, and E is alkoxy, cycloalkoxy, aralkoxy, aryloxy, —O—CO—OZ3, —O—Si(Z4)3, —O—PO(OZ5)2 or —O—CH2—OZ6 where Z3, Z4, Z5 and Z6 are selected from the group consisting of hydrogen, an aliphatic, araliphatic and aromatic moiety, when added to a wide variety of polymeric substrates, particularly polyolefins and styrenic polymers, surprisingly bestow flame retardant properties to such compositions.
    Type: Grant
    Filed: August 1, 2001
    Date of Patent: July 29, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Douglas Wayne Horsey, Stephen Mark Andrews, Leonard Harris Davis, Darrell David Dyas, Jr., Robert Leo Gray, Anunay Gupta, Bruce Vincent Hein, Joseph Stephen Puglisi, Ramanathan Ravichandran, Paul Shields, Rangarajan Srinivasan
  • Publication number: 20030130384
    Abstract: Polyolefins, especially polypropylene, can be made flame retardant by the incorporation therein of a synergistic mixture of a selected hindered amine substituted by an alkoxy, cycloalkoxy or hydroxyalkoxy moiety and a selected organic or inorganic brominated and/or phosphorus containing flame retardant, such as ammonium polyphosphate or decabromodiphenyl oxide wherein the amount of organic or inorganic flame retardant required to achieve an acceptable level of flame retardancy is significantly reduced compared to that needed when the hindered amine is not present.
    Type: Application
    Filed: December 19, 2002
    Publication date: July 10, 2003
    Inventors: Douglas Wayne Horsey, Stephen Mark Andrews, Leonard Harris Davis, Darrell David Dyas, Robert Leo Gray, Anunay Gupta, Bruce Vincent Hein, Joseph Stephen Puglisi, Ramanathan Ravichandran, Paul Shields, Rangarajan Srinivasan
  • Patent number: 6508847
    Abstract: Benzotriazole UV absorbers substituted with an ultra long ester or amide moiety wherein the ester or amide group is a hydrocarbyl group of 25 to 100 carbon atoms or is a group of alkyl of 25 to 100 carbon atoms interrupted by 5 to 39 oxygen atoms and terminated with an omega—OH or an omega—OR group exhibit excellent stabilization efficacy while they concomitantly do not bloom when incorporated into polyolefin films. These benzotriazole UV absorbers also provide excellent protection to white, dyed, dipped, unscented and/or scented candle wax from discoloration and degradation.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: January 21, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Mervin Wood, Ramanathan Ravichandran, Douglas Wayne Horsey, Anunay Gupta, Deborah DeHessa, Luther A. R. Hall, Andrea Smith, Stephen Mark Andrews
  • Patent number: 6472456
    Abstract: Polyolefins, especially polypropylene, can be made flame retardant by the incorporation therein of a synergistic mixture of a selected hindered amine substituted by an alkoxy, cydoalkoxy or hydroxyalkoxy moiety and a selected organic or inorganic brominated and/or phosphorus containing flame retardant, such as ammonium polyphosphate or decabromodiphenyl oxide wherein the amount of organic or inorganic flame retardant required to achieve an acceptable level of flame retardancy is significantly reduced compared to that needed when the hindered amine is not present.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: October 29, 2002
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Douglas Wayne Horsey, Stephen Mark Andrews, Leonard Harris Davis, Darrell David Dyas, Jr., Robert Leo Gray, Anunay Gupta, Bruce Vincent Hein, Joseph Stephen Puglisi, Ramanathan Ravichandran, Paul Shields, Rangarajan Srinivasan
  • Publication number: 20020151655
    Abstract: The surface energy of polymeric substrates is increased by the application or incorporation of novel amphiphilic block copolymers. The block copolymer additives comprise a linear hydrophilic polymer or oligomer and a random hyperbranched polymer or oligomer and is completely or partially terminated with lipophilic end groups. The polymeric articles or constructions which benefit from the application or incorporation of the amphiphilic block copolymers in the areas of anti-fog, dissipation of static electricity, paintability, dyeability, printability, wicking of moisture, adhesion and polymer compatibility include carpet fibers, composite fibers, agricultural films, nonwoven coverstock, exterior automotive bumper fascia, packaging, hygienic products, incompatible polymer blends, laminated articles and eyewear.
    Type: Application
    Filed: March 4, 2002
    Publication date: October 17, 2002
    Inventors: John James McNamara, Anunay Gupta, David Devore
  • Patent number: 6444758
    Abstract: The surface energy of polymeric substrates is increased by the application or incorporation of novel amphiphilic block copolymers. The block copolymer additives comprise a linear hydrophilic polymer or oligomer and a random hyperbranched polymer or oligomer and is completely or partially terminated with lipophilic end groups. The polymeric articles or constructions which benefit from the application or incorporation of the amphiphilic block copolymers in the areas of anti-fog, dissipation of static electricity, paintability, dyeability, printability, wicking of moisture, adhesion and polymer compatibility include carpet fibers, composite fibers, agricultural films, nonwoven coverstock, exterior automotive bumper fascia, packaging, hygienic products, incompatible polymer blends, laminated articles and eyewear.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: September 3, 2002
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: John James McNamara, Anunay Gupta, David Devore
  • Publication number: 20020111404
    Abstract: Benzotriazole UV absorbers substituted with a ultra long ester or amide moiety wherein the ester or amide group is a hydrocarbyl group of 25 to 100 carbon atoms or is a group of alkyl of 25 to 100 carbon atoms interrupted by 5 to 39 oxygen atoms and terminated with an omega-OH or an omega-OR group exhibit excellent stabilization efficacy while they concomitantly do not bloom when incorporated into polyolefin films. These benzotriazole UV absorbers also provide excellent protection to white, dyed, dipped, unscented and/or scented candle wax from discoloration and degradation.
    Type: Application
    Filed: February 11, 2002
    Publication date: August 15, 2002
    Inventors: Mervin Wood, Ramanathan Ravichandran, Douglas Wayne Horsey, Anunay Gupta, Deborah DeHessa, Luther A. R. Hall, Andrea Smith, Stephen Mark Andrews
  • Patent number: 6380285
    Abstract: Benzotriazole UV absorbers substituted with a ultra long ester or amide moiety wherein the ester or amide group is a hydrocarbyl group of 25 to 100 carbon atoms or is a group of alkyl of 25 to 100 carbon atoms interrupted by 5 to 39 oxygen atoms and terminated with an omega-OH or an omega-OR group exhibit excellent stabilization efficacy while they concomitantly do not bloom when incorporated into polyolefin films. These benzotriazole UV absorbers also provide excellent protection to white, dyed, dipped, unscented and/or scented candle wax from discoloration and degradation.
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: April 30, 2002
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Mervin Wood, Ramanathan Ravichandran, Douglas Wayne Horsey, Anunay Gupta, Deborah DeHessa, Luther A. R. Hall, Andrea Smith, Stephen Mark Andrews
  • Publication number: 20020010235
    Abstract: Hindered amine compounds containing a group of the formula 1
    Type: Application
    Filed: August 1, 2001
    Publication date: January 24, 2002
    Inventors: Douglas Wayne Horsey, Stephen Mark Andrews, Leonard Harris Davis, Darrell David Dyas, Robert Leo Gray, Anunay Gupta, Bruce Vincent Hein, Joseph Stephen Puglisi, Ramanathan Ravichandran, Paul Shields, Rangarajan Srinivasan
  • Publication number: 20020002242
    Abstract: The surface energy of polymeric substrates is increased by the application or incorporation of novel amphiphilic block copolymers. The block copolymer additives comprise a linear hydrophilic polymer or oligomer and a random hyperbranched polymer or oligomer and is completely or partially terminated with lipophilic end groups. The polymeric articles or constructions which benefit from the application or incorporation of the amphiphilic block copolymers in the areas of anti-fog, dissipation of static electricity, paintability, dyeability, printability, wicking of moisture, adhesion and polymer compatibility include carpet fibers, composite fibers, agricultural films, nonwoven coverstock, exterior automotive bumper fascia, packaging, hygienic products, incompatible polymer blends, laminated articles and eyewear.
    Type: Application
    Filed: February 7, 2001
    Publication date: January 3, 2002
    Inventors: John James McNamara, Anunay Gupta, David Devore
  • Publication number: 20010047046
    Abstract: Polyolefin films having incorporated therein a compound of the formula CH3CH2(CH2CH2)aCH2CH2(OCH2CH2)bOH, where a is 9 to 25 and b is 1 to 10, exhibit superior long lasting fog resistance. The polyolefin films are useful as packaging film for moist products and as a greenhouse film for agricultural applications.
    Type: Application
    Filed: May 3, 2001
    Publication date: November 29, 2001
    Inventors: Anunay Gupta, David Devore, John James McNamara, Alessandro Zedda
  • Publication number: 20010023268
    Abstract: Benzotriazole UV absorbers substituted with an ultra long ester or amide moiety wherein the ester or amide group is a hydrocarbyl group of 25 to 100 carbon atoms or is a group of alkyl of 25 to 100 carbon atoms interrupted by 5 to 39 oxygen atoms and terminated with an omega—OH or an omega—OR group exhibit excellent stabilization efficacy while they concomitantly do not bloom when incorporated into polyolefin films. These benzotriazole UV absorbers also provide excellent protection to white, dyed, dipped, unscented and/or scented candle wax from discoloration and degradation.
    Type: Application
    Filed: December 20, 2000
    Publication date: September 20, 2001
    Inventors: Mervin Wood, Ramanathan Ravichandran, Douglas Wayne Horsey, Anunay Gupta, Deborah DeHessa, Luther A. R. Hall, Andrea Smith, Stephen Mark Andrews