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:
Apr. 26, 2022
Filed:
Jun. 28, 2019
Disco Corporation, Tokyo, JP;
Setsuo Yamamoto, Tokyo, JP;
DISCO CORPORATION, Tokyo, JP;
Abstract
A porous chuck table for holding a plate-like workpiece under suction includes a porous plate having a porous structure, the porous plate having a holding surface for holding the workpiece under suction thereon, and a frame surrounding the porous plate and having a face side lying flush with the holding surface. The porous plate is at least made of spherical glass particles, adjacent ones of the glass particles are partly joined together, and interstices between adjacent ones of the partly joined glass particles function as pores through which a fluid can flow.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile