The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 6935144 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 30, 2005

Filed:

Mar. 20, 2003
Applicants:

Duraiswamy Lakshmanan, Chennai, IN;

Bommya Thangaraj, Chennai, IN;

Subramaniyam Krishnan, Chennai, IN;

Natesan Samivelu, Chennai, IN;

Paruchuri Gangadhar Rao, Chennai, IN;

Thirumalachari Ramasami, Chennai, IN;

Inventors:

Duraiswamy Lakshmanan, Chennai, IN;

Bommya Thangaraj, Chennai, IN;

Subramaniyam Krishnan, Chennai, IN;

Natesan Samivelu, Chennai, IN;

Paruchuri Gangadhar Rao, Chennai, IN;

Thirumalachari Ramasami, Chennai, IN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C14C001/00 ;
U.S. Cl.
CPC ...
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.


Find Patent Forward Citations

Lakshmanan, Duraiswamy. (2005). Device for leather processing (U.S. Patent No. 6935144). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6935144

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