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:
Jan. 06, 2004
Filed:
Apr. 16, 2002
Evgeny A. Garibin, St. Petersburg, RU;
Aleksey A. Demidenko, St. Petersburg, RU;
Boris I. Kvashnin, St. Petersburg, RU;
Igor A. Mironov, St. Petersburg, RU;
Gury T. Petrovsky, St. Petersburg, RU;
Vladimir M. Reyterov, St. Petersburg, RU;
Aleksandr N. Sinev, St. Petersburg, RU;
Corning Incorporated, Corning, NY (US);
Abstract
The invention provides a method of making UV<200 nm transmitting optical fluoride crystals for excimer laser lithography optics and a multicompartment container for growing optical fluoride crystals, comprising a number of graphite bowls that are placed on top of one another to form a stack and which have a central conical orifice in the bottom of each of them, and also comprising a seeding unit that has a central cylindrical orifice and is arranged under the lowermost bowl, characterized in the each bowl is fitted with a heat-removing device that is made in the form of a graphite cylinder with a central conical orifice, is mounted under the bottom of each bowl, and adjoins, with its other surface, the cover of the next bowl down, in which design the cover of each bowl, apart from the uppermost one, has a central conical orifice.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile