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. 20, 1977
Filed:
Jan. 02, 1973
Leonid Fedorovich Vereschagin, Moscow, SU;
Evgeny Nikolaevich Yakovlev, Moscow, SU;
Tatyana Dmitrievna Varfolomeeva, Moskovskaya Oblast, Podolsky Raion, SU;
Alexandr Yakovlevich Preobrazhensky, Moscow, SU;
Vladislav Nikolaevich Slesarev, Moscow, SU;
Vasily Alexandrovich Stepanov, Moscow, SU;
Ljudmila Efimovna Shterenberg, Moscow, SU;
Other;
Abstract
A method of producing polycrystalline diamonds which is characterized by providing a thermal contact of the reaction chamber with the cooled members of the device developing a high pressure and high temperatures for removing the heat generated within this chamber in the process of crystallization of a diamond, which method is also characterized in that the cross-sectional area of the metal-catalyst is not more than 0.04 that of the reaction chamber in a plane normal to the direction of the maximum withdrawal of the heat of crystallization. Said metal-catalyst is set in the carbon-containing material substantially in the center of the reaction chamber.