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:
Sep. 29, 1981

Filed:

Jan. 21, 1980
Applicant:
Inventors:

Yoshihiko Nishizawa, Noda, JP;

Yoshihiro Aketa, Noda, JP;

Takeshi Akao, Abiko, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A23L / ;
U.S. Cl.
CPC ...
426447 ; 71 18 ; 426807 ; 426445 ;
Abstract

Here is provided a process for treating feather or animal fur characterized by throwing feather or animal fur into a pressure-resistant vessel, directly heating it under an elevated pressure by means of saturated steam or superheated steam, then rapidly discharging it into an atmosphere of lower pressure to puff it, and drying and cooling it if necessary. The feather or animal fur thus treated can be crushed without difficulty. It can be utilized effectively as a feed for domestic animals in the form of a mixture with other feeds or as a nitrogen source fertilizer.


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