Patent · US Active

Using condensed chemicals to precondition lithium niobate and lithium tantalate crystals

US7381397B2 · kind B2 · utility

1Cited by

9References

26Claims

0Family size

Assignee

Crystal Technology, Inc. · US

Inventors

Dieter Hans Jundt · Palo Alto, US
Maria Claudia Custodio Kajiyama · San Jose, US

Key dates

Filing date	Dec 2, 2005
Grant date	Jun 3, 2008
Priority date	—
Expiry date	Jan 4, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S117/90
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.