Patents by Inventor Purshottam S. Patel

Purshottam S. Patel 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).

  • High-strength anaerobic sealants containing N-nitrosoamine modifier
    Patent number: 4166169
    Abstract: An anaerobic sealant composition capable of polymerizing upon exclusion of air comprises (1) a polymerizable mixture of polyacrylic ester monomer which includes a polyacrylic ester derived from alkoxylated bisphenol-type compounds, (2) an inorganic salt initiator which can be a persulfate or a perchlorate of ammonium, alkali metal or an alkaline earth metal, (3) a polymerization accelerator which can be a secondary or a tertiary amine, a N,N-di(lower alkyl)amide of a monocarboxylic aliphatic acid, an organic carboximide of a polycarboxylic acid, or an organic sulfimide of a carboxylic acid, or mixtures of the foregoing, (4) a N-nitrosoamine, and (5) a quinone-type polymerization inhibitor. The composition is prepared by compounding the aforementioned ingredients and suitably aging the resulting formulation.
    Type: Grant
    Filed: May 22, 1978
    Date of Patent: August 28, 1979
    Assignee: Felt Products Mfg. Co.
    Inventors: Purshottam S. Patel, Donald J. McDowell
  • High-strength anaerobic sealant composition and method of preparation
    Patent number: 4090997
    Abstract: An anaerobic sealant composition capable of polymerizing upon exclusion of air comprises (1) a polyacrylic ester monomer, (2) an inorganic salt initiator which can be a persulfate or a perchlorate of ammonium, alkali metal or an alkaline earth metal, (3) a polymerization accelerator which can be a secondary or tertiary amine, a N,N-di(lower alkyl)amide of a monocarboxylic aliphatic acid, an organic carboximide of a polycarboxylic acid, or an organic sulfimide of a carboxylic acid, or mixtures of the foregoing (4) a N-nitrosoamine, and (5) a quinone-type polymerization inhibitor. The composition is prepared by compounding the aforementioned ingredients and suitably aging the resulting formulation.
    Type: Grant
    Filed: March 5, 1976
    Date of Patent: May 23, 1978
    Assignee: Felt Products Mfg. Co.
    Inventors: Purshottam S. Patel, Donald J. McDowell
  • Anaerobic sealant composition and method of preparation
    Patent number: 3980627
    Abstract: An anaerobic sealant composition capable of polymerizing upon exclusion of air comprises (1) a polyacrylic ester monomer, (2) an inorganic salt initiator which can be a persulfate or a perchlorate of ammonium, alkali metal or an alkaline earth metal, (3) an accelerator which can be a N,N-di(lower alkyl) amide of a monocarboxylic aliphatic acid, an organic carboximide of a polycarboxylic acid, or an organic sulfimide of a carboxylic acid, and (4) a quinone-type polymerization inhibitor. The composition is prepared by compounding the aforementioned ingredients and suitably aging the resulting formulation.
    Type: Grant
    Filed: April 17, 1975
    Date of Patent: September 14, 1976
    Assignee: Felt Products Mfg. Co.
    Inventors: Donald J. McDowell, Purshottam S. Patel