Patents by Inventor James H. O'Mara

James H. O'Mara 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).

  • Copolymer useful as a pour point depressant for a lubricating oil
    Patent number: 5368761
    Abstract: A copolymer useful as a pour point depressant for hydrocarbon lubricating oils includes from about 15 mole percent to about 67 mole percent comonomeric units derived from a (C.sub.8 -C.sub.15) alkyl (meth)acrylate monomer, from about 3 mole percent to about 40 mole percent comonomeric units derived from a (C.sub.16 -C.sub.24) alkyl (meth)acrylate monomers and from greater than 30 mole percent to about 65 mole percent comonomeric units derived from a (C.sub.1 -C.sub.4)alkyl (meth)acrylate monomer.
    Type: Grant
    Filed: February 15, 1994
    Date of Patent: November 29, 1994
    Assignee: Rohm and Haas Company
    Inventors: Robert H. Gore, James H. O'Mara
  • Copolymer useful as a pour point depressant for a lubricating oil
    Patent number: 5312884
    Abstract: A copolymer useful as a pour point depressant for hydrocarbon lubricating oils includes from about 15 mole percent to about 67 mole percent comonomeric units derived from a (C.sub.8 -C.sub.15) alkyl (meth)acrylate monomer, from about 3 mole percent to about 40 mole percent comonomeric units derived from a (C.sub.16 -C.sub.24) alkyl (meth)acrylate monomers and from greater than 30 mole percent to about 65 mole percent comonomeric units derived from a (C.sub.1 -C.sub.4)alkyl (meth)acrylate monomer.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: May 17, 1994
    Assignee: Rohm and Haas Company
    Inventors: Robert H. Gore, James H. O'Mara
  • Additives to improve the flow of heavy fuels and crude oils
    Patent number: 4000986
    Abstract: Long-chain, amide-containing esters of carboxylic acid-containing polymers as flow improvers in hydrocarbon oils are disclosed and claimed. These fluidity improvers are useful in hydrocarbon oils, such as crude oils, residual fuel oils and middle distillate fuels. The novel materials of the present invention are also useful as pour point depressants in various hydrocarbon oils, for example, in crude oils, residual fuel oils and middle distillate fuels.
    Type: Grant
    Filed: January 15, 1975
    Date of Patent: January 4, 1977
    Assignee: Rohm and Haas Company
    Inventors: Edward H. Specht, James H. O'Mara
  • Additives to improve the flow of heavy fuels and crude oils
    Patent number: RE30238
    Abstract: Long-chain, amide-containing esters of carboxylic acid-containing polymers as flow improvers in hydrocarbon oils are disclosed and claimed. These fluidity improvers are useful in hydrocarbon oils, such as crude oils, residual fuel oils and middle distillate fuels. The novel materials of the present invention are also useful as pour point depressants in various hydrocarbon oils, for example, in crude oils, residual fuel oils and middle distillate fuels.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: March 25, 1980
    Assignee: Rohm and Haas Company
    Inventors: Edward H. Specht, James H. O'Mara