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.:
Date of Patent:
Aug. 17, 1999
Filed:
Sep. 08, 1997
Applicant:
Inventors:
Yoko Mizuguchi, Ichikawa, JP;
Katsuhiko Sugiyama, Ichikawa, JP;
Junji Osawa, Kawasaki, JP;
Kaichi Hara, Tokyo, JP;
Assignee:
New Oji Paper Co., Ltd, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01G / ;
U.S. Cl.
CPC ...
47-9 ;
Abstract
A mulching paper sheet having satisfactory mechanical strength, elongation, weathering resistance and biodegradation resistance while being used for plant culture, includes a paper sheet substrate formed mainly from a cellulosic pulp; a biodegradation-retarding agent comprising humic acid and/or a water-insoluble metal salt of humic acid and coated on or impregnated in the substrate; and optionally an antimicrobial agent contained in at least the longitudinal side edge portions of the paper sheet substrate.