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:
May. 06, 1980
Filed:
Nov. 26, 1976
Applicant:
Inventors:
Richard G Buckles, Redwood City, CA (US);
Harold M Leeper, Mountain View, CA (US);
Assignee:
ALZA Corporation, Palo Alto, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
A61M / ; B65D / ; C08C / ; C08C / ;
U.S. Cl.
CPC ...
1282 / ; 128D / ; 222206 ; 222215 ; 525334 ; 525387 ;
Abstract
An improvement in liquid dispensers, especially those used to infuse liquid drugs into patients, that dispense liquid under pressure from an expansible, elastomer bladder is disclosed. The improvement is that the bladder is made from synthetic vulcanized polyisoprene, especially polyisoprene that has 90% to 98% cis linkages and has been vulcanized with an organic peroxide, such as dicumyl peroxide, at a concentration of 5.5.times.10.sup.-3 to 7.5.times.10.sup.-3 moles of peroxide per 100 grams of polyisoprene.