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:
Oct. 07, 1980
Filed:
Feb. 26, 1979
Applicant:
Inventor:
Doyle V Haren, Clyde, NC (US);
Assignee:
Dayco Corporation, Dayton, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ; B29D / ;
U.S. Cl.
CPC ...
428375 ; 101327 ; 1014011 ; 264 453 ; 264 49 ; 428304 ; 428309 ; 428401 ; 428906 ; 428909 ;
Abstract
A method of making a microporous elastomeric material having interconnecting cavities and which may be used as an ink dispensing article is provided wherein such material is made by the steps of admixing fibrous material and particles of hydrated magnesium sulfate in an elastomeric matrix material, shaping the material, curing the elastomeric matrix material, simultaneously causing liberation of water of crystallization from the hydrated magnesium sulfate which provides a blowing effect resulting in the formation of interconnecting passages between the particles from the cured material.