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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.:

US 4169662 B1

PDFFull Text
Date of Patent:
Oct. 02, 1979

Filed:

Dec. 01, 1977

Method and apparatus for producing acoustic waves by laser pulses

Applicant:
Inventors:

Walter Kaule, Cologne, DE;

Erik Primbsch, Cologne, DE;

Assignee:

Krautkramer-Branson, Incorporated, Stratford, CT (US);

Attorneys:

Steinberg; Ervin B.

Feig; Philip J.

Primary Examiner:

William L Sikes

Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
350358 ;
Abstract

Focussed acoustic waves are generated free of physical contact in a light absorbing workpiece by the use of laser beam means providing a coherent light beam which in a pulsed manner impinges upon the surface of the workpiece in a Fresnel zone pattern. The zoned pattern is caused in a typical example by a suitable mask interposed between the laser source and workpiece surface. The thermal effect responsive to the laser beam energy produces in the workpiece a plurality of acoustic waves having a common focal point.

Find Patent Forward Citations

Kaule, Walter. (1979). Method and apparatus for producing acoustic waves by laser pulses (U.S. Patent No. 4169662). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4169662

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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