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:
Feb. 24, 1997
Applicant:
Inventors:
Assignees:
DMT-Gesellschaft Fur Forschung Und Prufung MBH, Essen, DE;
Welldone Engineering GmbH, Beedenbostel, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
175 40 ; 175 48 ; 367 83 ;
Abstract
In a drill string pressure pulses are generated by expansion and constriction of an elastic body to transmit information along the drill string.
Vorhoff, Werner. (1998). Apparatus for the transmission of information in a drill string (U.S. Patent No. 5806612). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5806612
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile