Issued Patents All Time
Showing 151–175 of 185 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6696381 | Process for the preparation of a novel catalyst useful for sweetening of sour petroleum distillates | Brij Bahadur Agrawal, Som Nath Puri, Gautam Das, Bir Sain, Bhagwati Prasad Balodi +6 more | 2004-02-24 |
| 6565740 | Process for sweetening of LPG, light petroleum distillates by liquid-liquid extraction using metal phthalocyanine sulphonamide catalyst | Bir Sain, Som Nath Puri, Gautam Das, Bhagwati Prasad Balodi, Sunil Kumar +4 more | 2003-05-20 |
| 6433043 | Removable imbibition composition of photochromic compound and kinetic enhancing additive | Michael S. Misura | 2002-08-13 |
| 6371225 | Drill bit and surface treatment for tungsten carbide insert | James L. Overstreet | 2002-04-16 |
| 6353102 | Photochromic naphthopyrans | — | 2002-03-05 |
| 6348604 | Photochromic naphthopyrans | Clara M. Nelson, Anu Chopra, David B. Knowles, Barry Van Gemert | 2002-02-19 |
| 6296785 | Indeno-fused photochromic naphthopyrans | Clara M. Nelson, Anu Chopra, Olga G. Petrovskaia, David B. Knowles, Barry Van Gemert | 2001-10-02 |
| 6153126 | Photochromic six-membered heterocyclilc-fused naphthopyrans | — | 2000-11-28 |
| 6149841 | Photochromic benzopyrano-fused naphthopyrans | — | 2000-11-21 |
| 6113814 | Polymerizable polyalkoxylated naphthopyrans | Barry Van Gemert, Anu Chopra | 2000-09-05 |
| 6080338 | Water soluble photochromic compounds, compositions and optical elements comprising the compounds | — | 2000-06-27 |
| 6022497 | Photochromic six-membered heterocyclic-fused naphthopyrans | — | 2000-02-08 |
| 6022495 | Photochromic benzopyrano-fused naphthopyrans | — | 2000-02-08 |
| 5952188 | Reusable immobilized microbial composition useful as ready-to-use seed inoculum in BOD analysis | Rita Kumar, Alka Sharma, Sharad Gangal, Santosh Makhijani | 1999-09-14 |
| 5891368 | Fluoranthenopyrans | — | 1999-04-06 |
| 5879592 | Water soluble photochromic compounds, compositions and optical elements comprising the compounds | — | 1999-03-09 |
| 5808063 | Photochromic spiro(indoline) fluoranthenoxazine compounds | — | 1998-09-15 |
| 5744070 | Photochromic substituted naphthopyran compounds | — | 1998-04-28 |
| 5723072 | Photochromic heterocyclic fused indenonaphthopyrans | — | 1998-03-03 |
| 5698141 | Photochromic heterocyclic fused indenonaphthopyrans | — | 1997-12-16 |
| 5658500 | Substituted naphthopyrans | David B. Knowles, Barry Van Gemert | 1997-08-19 |
| 5658501 | Substituted naphthopyrans | David B. Knowles, Barry Van Gemert | 1997-08-19 |
| 5656206 | Substituted naphthopyrans | David B. Knowles, Barry Van Gemert | 1997-08-12 |
| 5651923 | Substituted naphthopyrans | David B. Knowles, Barry Van Gemert | 1997-07-29 |
| 5650098 | Substituted naphthopyrans | David B. Knowles, Barry Van Gemert | 1997-07-22 |