Patents by Inventor Subramaniyam Krishnan

Subramaniyam Krishnan 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: 6935144
    Abstract: An improved device for leather processing comprising a vessel containing perforated dummy doors and compartments with pegs as well as friction disk fixed along the exterior periphery of the vessel. The leathers to be wet processed are subjected to mechanical action in terms of both rocking action as well as rotational movement simultaneously. The perpetual motion of the device help to create pressure generation for quickening the process and for addition of chemical solution continuously. The processing takes place under pressure generated inside the vessel and with the support of multiple mechanical actions, resulting in higher exhaustion of bath with less processing time and energy requirement and higher capacity utilization to produce good quality leather.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: August 30, 2005
    Assignee: Council of Scientific and Industrial Research
    Inventors: Duraiswamy Lakshmanan, Bommya Thangaraj, Subramaniyam Krishnan, Natesan Samivelu, Paruchuri Gangadhar Rao, Thirumalachari Ramasami
  • Publication number: 20040182118
    Abstract: An improved device for leather processing comprising a vessel containing perforated dummy doors and compartments with pegs as well as friction disk fixed along the exterior periphery of the vessel. The leathers to be wet processed are subjected to mechanical action in terms of both rocking action as well as rotational movement simultaneously. The perpetual motion of the device help to create pressure generation for quickening the process and for addition of chemical solution continuously. The processing takes place under pressure generated inside the vessel and with the support of multiple mechanical actions, resulting in higher exhaustion of bath with less processing time and energy requirement and higher capacity utilization to produce good quality leather.
    Type: Application
    Filed: March 20, 2003
    Publication date: September 23, 2004
    Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Duraiswamy Lakshmanan, Bommya Thangaraj, Subramaniyam Krishnan, Natesan Samivelu, Paruchuri Gangadhar Rao, Thirumalachari Ramasami