Polishing pad and method for making the same
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United States of America Patent
Stats
-
Jun 6, 2017
Grant Date -
Apr 9, 2015
app pub date -
Aug 26, 2014
filing date -
Oct 3, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention relates to a polishing pad and a method for making the same. The polishing pad has a grinding layer. The grinding layer includes a plurality of fibers and a main body. The fineness of the fibers is 0.001 den to 6 den. The main body is a foam and encloses the fibers. The main body has a plurality of first pores and a plurality of second pores, wherein the first pores are communicated with each other, and the second pores are independent from each other. The size of the first pores is at least 5 times greater than the size of the second pores. The hardness of the grinding layer is 30 to 90 shore D, and the compression ratio thereof is 1% to 10%.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2014 Application Filing Year
- B24B Class
- 633 Applications Filed
- 543 Patents Issued To-Date
- 85.79 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B24B Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 6, 2024 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 6, 2028 |
