Patents by Inventor Mahendra Kumar Sharma

Mahendra Kumar Sharma 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: 6699931
    Abstract: The present invention relates to modified alkyd polymers, and compositions made from such polymers, wherein the alkyd polymers are modified with polyol-containing latex compositions and/or diol-containing latex compositions. The invention further relates to compositions prepared from such modified alkyd compositions.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: March 2, 2004
    Assignee: Eastman Chemical Company
    Inventors: Thauming Kuo, John David Moncier, Allan Scott Jones, David Logan Murray, Mahendra Kumar Sharma
  • Publication number: 20030045625
    Abstract: The present invention relates to surfactantless latex compositions. More particularly, the present invention pertains to surfactantless latex compositions comprising sulfo-polyester polymers wherein the compositions have a continuous phase comprising water, diol, polyol or a mixture thereof. Still further, the present invention provides methods of making polymer blends comprising a condensation polymer and a latex polymer whereby the latex polymer is derived from a surfactantless latex composition comprising sulfo-polyester polymers. Polymer blends made by such methods are also provided.
    Type: Application
    Filed: August 7, 2002
    Publication date: March 6, 2003
    Applicant: Eastman Chemical Company
    Inventors: Mahendra Kumar Sharma, Linda Jane Adams
  • Publication number: 20030018110
    Abstract: The present invention relates to modified alkyd polymers, and compositions made from such polymers, wherein the alkyd polymers are modified with polyol-containing latex compositions and/or diol-containing latex compositions. The invention further relates to compositions prepared from such modified alkyd compositions.
    Type: Application
    Filed: March 8, 2002
    Publication date: January 23, 2003
    Inventors: Thauming Kuo, John David Moncier, Allan Scott Jones, David Logan Murray, Mahendra Kumar Sharma
  • Patent number: 6462109
    Abstract: The present invention relates to surfactantless latex compositions. More particularly, the present invention pertains to surfactantless latex compositions comprising sulfo-polyester polymers wherein the compositions have a continuous phase comprising water, diol, polyol or a mixture thereof. Still further, the present invention provides methods of making polymer blends comprising a condensation polymer and a latex polymer whereby the latex polymer is derived from a surfactantless latex composition comprising sulfo-polyester polymers. Polymer blends made by such methods are also provided.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: October 8, 2002
    Assignee: Eastman Chemical Company
    Inventors: Mahendra Kumar Sharma, Linda Jane Adams
  • Publication number: 20020007010
    Abstract: The present invention describes a process for the direct preparation of methyl p-vinylbenzoate from methyl p-formylbenzoate using ketene in the presence of potassium acetate. The chief products obtained from the process are about a five to two ratio of methyl p-vinylbenzoate to p-carbomethoxycinnamic acid. The latter may be thermally decarboxylated, especially in the presence of copper powder, to produce additional quantities of methyl p-vinylbenzoate. Methyl p-vinylbenzoate may further undergo hydrolysis to form p-vinyl benzoic acid. Both methyl p-vinyl benzoate and p-vinyl benzoic acid may be polymerized with ethylenically unsaturated monomers to form useful latex compositions of the present invention.
    Type: Application
    Filed: September 12, 2001
    Publication date: January 17, 2002
    Applicant: Eastman Chemical Company
    Inventors: Philip Conrad Heidt, Matthew Lynn Elliott, Mahendra Kumar Sharma
  • Patent number: 6313340
    Abstract: The present invention describes a process for the direct preparation of methyl p-vinylbenzoate from methyl p-formylbenzoate using ketene in the presence of potassium acetate. The chief products obtained from the process are about a five to two ratio of methyl p-vinylbenzoate to p-carbomethoxycinnamic acid. The latter may be thermally decarboxylated, especially in the presence of copper powder, to produce additional quantities of methyl p-vinylbenzoate. Methyl p-vinylbenzoate may further undergo hydrolysis to form p-vinyl benzoic acid. Both methyl p-vinyl benzoate and p-vinyl benzoic acid may be polymerized with ethylenically unsaturated monomers to form useful latex compositions of the present invention.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: November 6, 2001
    Assignee: Eastman Chemical Corporation
    Inventors: Philip Conrad Heidt, Matthew Lynn Elliott, Mahendra Kumar Sharma
  • Patent number: 6242388
    Abstract: A mutual solvent for use in oil and gas well operations comprising 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate and/or 2,2,4-trimethyl-1,3-pentanediol diisobutyrate, a coupling solvent, and an acid stable surfactant. The coupling solvent is selected from ethylene glycol monobutyl ether; diethylene glycol monobutyl ether; propylene glycol monomethyl ether acetate; propylene glycol monomethyl ether; C1-C5 alkyl alcohol; and mixtures thereof. The invention also relates to an emulsion for use in oil and gas well operations comprising an aqueous acid or acid-salt brine solution and the mutual solvent as described above. An emulsion according to the invention is stable, non-toxic, and effectively removes asphaltenic and paraffinic hydrocarbons from drilling equipment and oil and gas wells.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: June 5, 2001
    Assignee: Eastman Chemical Company
    Inventors: Mahendra Kumar Sharma, Ronald Allen Smith, Melissa Darlene Goodwin
  • Patent number: 5800897
    Abstract: This invention is directed to an air freshener composition containing a fiber pad comprising at least one needle-punched, nonwoven, hydrophilic fiber wherein the fiber has a capillary structure and deep grooves or channels along the longitudinal axis of the fiber, a fragrance incorporated into said fiber pad, wherein the fiber pad is enclosed by a container having air passageways to allow for the fragrance to escape into the surrounding environment.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: September 1, 1998
    Assignee: Eastman Chemical Company
    Inventors: Mahendra Kumar Sharma, Richard Irving Garrity, John Jacob Hiller