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. 17, 2024
Filed:
Jan. 02, 2020
Schott Pharma Ag & Co. Kgaa, Mainz, DE;
Schott Pharma Schweiz Ag, St. Gallen, CH;
Eveline Rudigier-Voigt, Mainz, DE;
Jovanna Djordjevic-Reiss, Mainz, DE;
Thorsten Schneider, Nackenheim, DE;
Joerg Geiger, Gais, CH;
Daniel Grigas, Büdingen, DE;
SCHOTT Pharma AG & Co., KGaA, Mainz, DE;
SCHOTT Pharma Schweiz AG, St. Galien, CN;
Abstract
A method of treating a glass cylinder for a piston-cylinder arrangement for reducing the friction of a piston on an inner cylinder wall of the glass cylinder includes: elevating surface energy of glass of an interior bounded by the inner cylinder wall and hence lowering a contact angle of the glass with water. The contact angle is lowered by: a gas discharge that acts on the glass at the inner cylinder wall and is generated by an electric or electromagnetic field; or the action of ozone on the glass surface. The glass with the lowered contact angle is contacted with water to form a water film on the contacted glass.