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:
May. 03, 1994

Filed:

Oct. 23, 1991
Applicant:
Inventors:

Mutuo Nakagawa, Takarazuka, JP;

Yasuo Nakagawa, Takarazuka, JP;

Masaaki Nishida, Amagasaki, JP;

Jun Hosokawa, Takamatsu, JP;

Masashi Nishiyama, Kan-onji, JP;

Takamasa Kubo, Takamatsu, JP;

Kazutoshi Yoshihara, Takamatsu, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B27N / ; D21F / ; B01D / ; B32B / ;
U.S. Cl.
CPC ...
428 342 ; 1621577 ; 162174 ; 162177 ; 2105001 ; 210507 ; 428283 ; 428288 ; 428297 ; 428303 ; 4283117 ; 4283119 ; 428533 ; 428536 ; 428913 ;
Abstract

A biodegradable nonwoven fabric and molded vessel suitable to throwaway use such as in domestic, wrapping, agricultural, gardening, and civil engineering field. A web of cellulose-based fibers are combined with chitosan salt and an interfiber binder comprising a combination of chitosan salt and fine cellulose, or by combined use of the interfiber binder and physical combining techniques. They are naturally decomposed by microorganisms in the soil and can dissolve the polution problems.


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