Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6476238 | Purification method for obtaining high-purity PMDA | Chien-Liang Hwang | 2002-11-05 |
| 6084109 | Process for the preparation of pyromellitic dianhydride | Chian-Liang Hwang | 2000-07-04 |
| 5977356 | Process for preparing caprolactam | Hsi-Yen Hsu, Ching-Tang Lin, Kwang-Chic Lai, J. H. Tsai | 1999-11-02 |
| 5684207 | Preparation of methyl isobutyl ketone | Po-Yu Chen, Kuo-Ching Wu, Wen-Chyi Lin | 1997-11-04 |
| 5665889 | Method for the production of N-vinyl-2-pyrrolidone by vinylation | Pine-Sci Kuo, Chu-Chang Dai, Hsi-Yen Hsu, Ching-Tang Lin | 1997-09-09 |
| 5652362 | Preparation of caprolactam | Pine-Sci Kuo, Chu-Ching Dai, Ching-Tang Lin, Hsi-Yen Hsu | 1997-07-29 |
| 5569770 | Method for the production of N-Vinyl-2-Pyrrolidone by gas-phase dehydration reaction at atomospheric pressure | Pine-Sci Kuo, Chu-Chang Dai, Hsi-Yen Hsu, Ching-Tang Lin, Yi-Yun Lin | 1996-10-29 |
| 5371276 | Ring-opening polymerization of cyclic ethers | Fu-Chen Liu, Ching-Tang Lin, Huey-Jiuan Yeh, Fu-Hsi Yu | 1994-12-06 |
| 5344964 | Method for preparing ester end-capped polyalkylene ether | Fu-Chen Liu, Ching-Tang Lin, Wen-Fa Lin, Kuei-Chih Wang, Sheng-Te Yang | 1994-09-06 |
| 5254195 | Process for manufacturing moisture exchange element | Pen-Chang Tseng, Yew-Khoy Chuah, Chen U. Hwang, Han-Ting Chang, Chin-Shou Huang +2 more | 1993-10-19 |
| 5059724 | Preparation of methyl isobutyl ketone | Po-Yu Chen, Cha C. Chen, Nan-Shan Chang, Wen-Chyi Lin, T. K. Chuang | 1991-10-22 |
| 4801752 | Preparation of N-alkyl and N,N-dialkylaniline | Po-Yu Chen, Mei-Chin Chen, Nan-Shan Chang, Wen-Chyi Lin | 1989-01-31 |