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:
Sep. 30, 1980
Filed:
May. 25, 1979
Pierre Bore, Montfermeil, FR;
Lucienne Tourenq, Livry-Gargan, FR;
L'Oreal, Paris, FR;
Abstract
Apparatus for measuring the secretions of sebum of a skin sample of a living subject comprises a frosted glass plate spring urged to project from a casing (using a calibrated spring). When pressed against the forehead of a living subject the frosted plate retracts yieldably to collect sebum under reproducible conditions. A reference scale inside the casing of the apparatus is illuminated from a known light source and is observed from outside by looking through the greasy plate. The sebum secretion is measured by changing the position of the scale, or changing the line thickness of a reference mark on the scale until a sharp, fine image of the reference mark can be seen.