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:
Nov. 23, 2021
Filed:
Mar. 19, 2019
Government of the United States of America, As Represented BY the Secretary of Commerce, Gaithersburg, MD (US);
John Kitching, Boulder, CO (US);
GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE, Gaithersburg, MD (US);
Abstract
Making alkali metal vapor cells includes: providing a preform wafer that includes cell cavities in a cavity layer; providing a sealing wafer having a cover layer and transmission apertures; disposing a deposition assembly on the sealing wafer; disposing an alkali metal precursor in the deposition assembly; disposing the sealing wafer on the preform wafer; aligning the transmission apertures with the cell cavities; subjecting the alkali metal precursor to a reaction stimulus; producing alkali metal vapor in the deposition assembly; communicating the alkali metal vapor to the cell cavities; receiving, in the cell cavities, the alkali metal vapor from the transmission apertures; producing an alkali metal condensate in the cell cavity; moving the sealing wafer such that the cover layer encapsulates the alkali metal condensate in the cell cavities; and bonding the sealing wafer to the preform wafer to make individually sealed alkali metal vapor cells in the preform wafer.