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:
Dec. 27, 1988
Filed:
Mar. 03, 1982
Applicant:
Inventor:
Cyril F Drake, Harlow, GB;
Assignee:
International Standard Electric Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01M / ; B65B / ;
U.S. Cl.
CPC ...
206-05 ; 43124 ; 43131 ; 53474 ; 53561 ; 53567 ; 71 6411 ; 220D / ;
Abstract
A capsule for the controlled release of an active material, e.g. into soil, is described. The capsule comprises an insoluble tubular housing (11) containing a number of water soluble or biodegradable partition walls (13) defining one or more hermetically sealed compartments, (12) filled with the active material (14), e.g. an insecticide. When the capsule is in contact with water or an aqueous medium the partition walls (13) slowly dissolve or degrade thus releasing the active material after a predetermined delay.