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 6947791 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 20, 2005

Filed:

Sep. 27, 2001
Applicants:

Lei Zhang, San Diego, CA (US);

Gunter A. Hofmann, San Diego, CA (US);

Inventors:

Lei Zhang, San Diego, CA (US);

Gunter A. Hofmann, San Diego, CA (US);

Assignee:

Genetronics, Inc., San Diego, CA (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
A61N001/30 ;
U.S. Cl.
CPC ...
Abstract

The present invention is based on the development of a method for cosmetic delivery of L-ascorbic acid-containing compositions to the layer of the skin wherein collagen formation takes place to enhance production of collagen and thereby combat some of the effects of aging and oxy-radical damage on skin. Sufficient electric pulses applied to a region of skin surface temporarily create new pathways through the lipid skin barrier, thereby delivering an L-ascorbic acid-containing composition through the lipid skin barrier and enhancing production of collagen in the region of the skin so treated. A handheld electrical pulser apparatus, optionally table-top adaptable, and methods of use for cosmetic treatment of degenerative skin conditions are provided by the invention.


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