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:
Sep. 15, 1998
Filed:
Jun. 10, 1996
Applicant:
Inventors:
Klaus Szablikowski, Walsrode, DE;
Werner Lange, Visselhovede, DE;
Jorn-Bernd Pannek, Fallingbostel, DE;
Rene Kiesewetter, Fallingbostel, DE;
Assignee:
Wolff Walsrode AG, Walsrode, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08B / ; C08B / ; C09K / ;
U.S. Cl.
CPC ...
536 90 ; 536 95 ; 536 96 ; 536 97 ; 536 98 ; 536 92 ; 536 84 ; 536 85 ; 507103 ; 507112 ; 507113 ; 507114 ; 507115 ; 175267 ; 175 57 ;
Abstract
The present invention relates to water-soluble, particularly ternary, preferably ionic, cellulose mixed ethers, more particularly to anionic water-soluble cellulose mixed ethers, as additives for drilling fluid applications.
Szablikowski, Klaus. (1998). Use of cellulose mixed ethers as additives for earth pressure shields (U.S. Patent No. 5808052). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5808052
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile