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:
Jun. 26, 1990
Filed:
Sep. 30, 1988
David S Harvey, Groton, MA (US);
Mobil Solar Energy Corporation, Billerica, MA (US);
Abstract
An apparatus and process are disclosed for growing tubular crystalline bodies according to the Edge defined, Film-Fed Growth (EPG) process, wherein the apparatus has at least one exterior passage (240) and at least oen interior passage (245) formed in its crucible die assembly (200) and associated parts, whereby gases introduced into at least one exterior passage (725) will be delivered to the zone located outside the growing crystalline body (900) (i.e. the 'exterior' zone ) adjacent to the growth face on the die member (215), and gases introduced into at least one interior passage (720) will be delivered to the zone located inside of the hollow crystalline body (i.e. the 'interior' zone) adjacent to the growth face on the die member, whereby the atmosphere in each of the zones may be separately controlled.