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. 10, 1998
Filed:
Oct. 29, 1997
Hans-Thomas Schacht, Rheinfelden, DE;
Norbert Muenzel, Heltersheim, DE;
Carl-Lorenz Mertesdorf, Bad Krozingen, DE;
Pasquale Alfred Falcigno, Basel, CH;
Heinz Holzwarth, Bad Krozingen, DE;
Ottmar Rohde, deceased, late of Eimeldingen, DE;
Hans-Jorg Kirner, Pratteln, CH;
Olin Microelectronic Chemicals, Inc., East Providence, RI (US);
Abstract
Radiation-sensitive compositions comprising a substance which forms acid under the action of actinic radiation and polymers based on combination of different repeating units derived from hydroxy styrene and hydroxy-vinylcyclohexane derivatives wherein a portion of the hydroxyl groups are replaced with either acid-labile acetal or ketal protecting groups and where a portion of the repeating groups comprise two crosslinked species connected via the protecting groups.