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. 26, 2019
Filed:
Mar. 18, 2014
Aptar France Sas, Le Neubourg, FR;
Guillaume Brouet, Rouen, FR;
APTAR FRANCE SAS, Le Neubourg, FR;
Abstract
Surface treatment process of a metering valve, said metering valve comprising a valve body and a valve sliding in said valve body, said process comprising a first step of forming a thin film of silicone by chemical grafting on at least one support surface of said valve body and/or said valve, and a second step of applying free silicone on said thin film of grafted silicone, such that said treated support surface simultaneously comprises grafted silicone and free silicone, siloxane chains of the grafted silicone and free silicone associating chemically together to reinforce the holding of the free silicone on said thin film of grafted silicone.