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Siew F. Yoong
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Singapore 2365, SG
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last 30 patents
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Patent Grant
Mild cold pearlizing concentrates
Patent number
5,925,604
Issue date
Jul 20, 1999
Rhodia Inc.
Pu Chen
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Patent Grant
Cold pearlizing concentrates
Patent number
5,646,106
Issue date
Jul 8, 1997
Rhone-Poulenc Specialty Chemicals Asia Pacific PTE LTD
Pu Chen
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Patent Grant
Mild cold pearlizing concentrates
Patent number
5,560,873
Issue date
Oct 1, 1996
Pu Chen
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE