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:
Jun. 18, 1991
Filed:
Nov. 17, 1989
Applicant:
Inventors:
Amulya L Athayde, Mountain View, CA (US);
Richard W Baker, Palo Alto, CA (US);
Assignee:
Membrane Technology & Research, Inc., Menlo Park, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428246 ; 427340 ; 427341 ; 427342 ; 4273899 ; 427412 ; 428252 ; 428253 ; 428282 ; 428284 ; 428286 ; 4283155 ; 4283157 ; 4283159 ; 428332 ; 428421 ; 428422 ; 428447 ; 428913 ;
Abstract
A protective material having a membrane layer and a sorbent layer. The membrane is a thin-film composite membrane permeable to water vapor but relatively impermeable to organic vapors. The sorbent layer includes activated carbon or other sorbent or reactive material, and captures traces of organic vapor that permeate the membrane layer. The material is particularly useful in intermediate-level protective clothing.