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:
Dec. 31, 2013
Filed:
Mar. 26, 2008
Varouj Amirkhanian, La Crescenta, CA (US);
Varouj Amirkhanian, La Crescenta, CA (US);
Qiagen Sciences, LLC, Germantown, MD (US);
Abstract
A capillary tube having a hard, optically clear external coating or cladding. In one embodiment, the external clear coating comprises hard-fluoropolymer. The hard-fluoropolymer coating bonds to the fused silica glass, providing higher strength and superior static fatigue performance resulting in vastly improved bending flexibility. The thin hard-fluoropolymer coating of capillaries provides higher initial tensile strength, longer lifetime (resistance to stress corrosion or static fatigue) and superior ability to transmit excitation light and emitted light directly through the coating for fluorescence based detection.