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. 27, 1987
Filed:
Aug. 04, 1986
Nikolay G Bakalov, Sofia, BG;
Penyo I Penev, Sofia, BG;
Ivan K Ivanov, Sofia, BG;
Velyo T Velev, Sofia, BG;
Peter H Savov, Sofia, BG;
Alexander Y Vulchev, Sofia, BG;
Npp Po Elektrotermia, Sofia, BG;
Abstract
A sealing device which comprises a refractory portion consisting of high-alumina material with an Al.sub.2 O.sub.3 content higher than 80%. The internal portion of the sealing device is made up of refractory cement with an Al.sub.2 O.sub.3 content higher than 80% which is cast and vibrated in a mould formed by a cylinder-shaped metallic part of the device and an internal fixed template. After the setting of the refractory cement, the internal templet is drawn out and the device, comprising a metallic and a refractory portion, is subjected to drying. This is effected at 150.degree. C.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile