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.

Date of Patent:
Mar. 02, 1999

Filed:

Jan. 02, 1997
Applicant:
Inventors:

Takemori Takayama, Osaka, JP;

Yoshitaka Ohyama, Osaka, JP;

Masato Miyake, Ishikawa, JP;

Katsuyoshi Saito, Kyoto, JP;

Hiroshi Ono, Saitama, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C04B / ;
U.S. Cl.
CPC ...
528338 ; 528310 ; 528322 ; 5283291 ; 528332 ; 528339 ; 528340 ; 528341 ; 524100 ; 524227 ; 524600 ; 524607 ; 419 36 ; 419 37 ; 264 63 ; 264344 ;
Abstract

A water solvent extraction degreasing method capable of reducing degreasing time without consideration of abrupt decomposition/vaporization and swelling caused by heat. An organic binder is removed from a molded product that is produced by a powder material mixed with the organic binder and this organic binder contains at least one water-soluble organic compound and at least one water-insoluble thermoplastic resin. The degreasing step of this method includes a water solvent extraction step for extracting the water-soluble organic compound from the organic binder contained in the molded product, using water as a solvent.


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