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:
Dec. 26, 2006
Filed:
May. 25, 2004
Dieter Hans Jundt, Palo Alto, CA (US);
Maria Claudia Custodio Kajiyama, San Jose, CA (US);
Jason Louis Spitzer, San Jose, CA (US);
Dieter Hans Jundt, Palo Alto, CA (US);
Maria Claudia Custodio Kajiyama, San Jose, CA (US);
Jason Louis Spitzer, San Jose, CA (US);
Crystal Technology, Inc., Palo Alto, CA (US);
Abstract
Methods and apparatus for preconditioning a lithium niobate or lithium tantalate crystal. At least a portion of a surface of the crystal is covered with a condensed material including one or more active chemicals. The crystal is heated in a non-oxidizing environment above an activating temperature at which the active chemicals contribute to reducing the crystal beneath the covered surface portion. The crystal is cooled from above the activating temperature to below a quenching temperature at which the active chemicals become essentially inactive for reducing the crystal.