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. 15, 2026
Filed:
Oct. 23, 2023
Sky Tech Inc., Hsinchu County, TW;
Jung-Hua Chang, Hsinchu County, TW;
Ching-Liang Yi, Hsinchu County, TW;
Ta-Hao Kuo, Hsinchu County, TW;
SKY TECH INC., Hsinchu County, TW;
Abstract
A holder plate for negative pressure chucking, in which the holder plate is plate body comprising a holding surface and a bottom surface. Air passages are formed inside the holder plate and communicates the holding surface and the bottom surface, and the air passages form a plurality of ventilation openings on the holding surface. A total area of an opening of the ventilation openings in the holding surface is less than 50% of the area of the holder plate and greater than 0.2% of the area of the holder plate. The thermal conductivity of the holder plate is greater than 100 W/mK; wherein W is watts, m is meters, and K is the absolute temperature scale.