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:
May. 18, 1993
Filed:
Dec. 19, 1990
Applicant:
Inventor:
Rangaswamy Srinivasan, Yorktown Heights, NY (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B44C / ;
U.S. Cl.
CPC ...
156643 ; 156668 ; 156345 ; 2504921 ; 21912161 ; 21912167 ; 21912178 ;
Abstract
A beam (12) of continuous wave ultraviolet light having a wavelength that is absorbed by an organic solid (20) is focused to a spot (18) on a surface of the organic solid (20). Relative motion is imparted between the beam (12) and organic solid (20) at a rate that defines, together with a dimension of the spot (18), an effective pulse width. Within prescribed ranges of the wavelength, power density and effective pulse width, a new cutting regime was discovered whereby organic solids can be cut at rates and with a quality of cuts previously requiring pulsed ultraviolet laser sources.