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. 16, 1999
Filed:
Oct. 29, 1997
Applicant:
Inventors:
Marc A Unger, Pasadena, CA (US);
Dmitri A Kossakovski, Pasadena, CA (US);
Assignee:
California Institute of Technology, Pasadena, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B44C / ;
U.S. Cl.
CPC ...
216 97 ; 216 11 ;
Abstract
A two-phase etching system having an etchant solution and an overlayer of a protective solvent. The physical properties of the etchant solution and the protective solvent are matched to form a substantially flat meniscus on the top surface of the etchant solution around a fiber immersed in the protective solvent and the etchant solution. Convective flows within the etchant solution are maintained to form a smooth and sharp fiber probe with a small tip apex.