Issued Patents All Time
Showing 26–46 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5047542 | Process for preparing pyridine carboxylic acid esters | B. Franklin Gupton, James H. Rea, John Charles Saukaitis | 1991-09-10 |
| 5037949 | Polymers prepared from 4,4'-bis[2-(amino (halo) phenoxyphenyl) hexafluoroisopropyl]diphenyl ether | Dinesh N. Khanna, Rohitkumar H. Vora, Ruediger J. Erckel | 1991-08-06 |
| 5021320 | Polyamide containing the hexafluoroisopropylidene group with O-quinone diazide in positive working photoresist | Dinesh N. Khanna, Bernd Hupfer | 1991-06-04 |
| 5011753 | Photoresist compositions containing polyamides polybenzoxa from bis((aminohydroxyphenyl)hexafluoroisopropyl)diphenyl ethers | Dinesh N. Khanna | 1991-04-30 |
| 4992598 | Purification of 1, 1, 1-tris(4'-hydroxyphenyl)ethane | Heinz Strutz | 1991-02-12 |
| 4978742 | Polymers prepared from 2-(3-aminophenyl)-2-(4-aminophenyl) hexafluoro propane | Rohitkumar H. Vora | 1990-12-18 |
| 4978738 | High molecular weight, thermally soluble polyimides | Rohitkumar H. Vora, Dinesh N. Khanna | 1990-12-18 |
| 4939215 | Heat resistant polybenzoxazole from bis-((aminohydroxyphenyl)hexafluoroisopropyl)diphenyl ether | Dinesh N. Khanna | 1990-07-03 |
| 4931540 | Polymers prepared from 4,4'-bis[2-(3,4-(dicarboxyphenyl)hexafluoroisopropyl] diphenyl ether dianhydride | Dinesh N. Khanna, Rohitkumar H. Vora, Ruediger J. Erckel | 1990-06-05 |
| 4927736 | Hydroxy polyimides and high temperature positive photoresists therefrom | Dinesh N. Khanna | 1990-05-22 |
| 4925915 | Polymers prepared from 4,4'-bis(2-(amino(halo) phenoxyphenyl) hexafluoroisopropyl) diphenyl ether | Dinesh N. Khanna, Rohitkumar H. Vora, Ruediger J. Erckel | 1990-05-15 |
| 4906760 | Purification of anhydrides | Suzanne Fontaine | 1990-03-06 |
| 4889430 | Planetary gear extruder for the compounding and extrusion of plastic materials | — | 1989-12-26 |
| 4876851 | Infrared radiation screening device | — | 1989-10-31 |
| 4871859 | Process for preparing pyridine carboxylic acid esters | B. Franklin Gupton, James H. Rea | 1989-10-03 |
| 4866155 | Polester of bis(2-(hydroxyphenyl)-hexafluoroisopropyl)diphenyl ether | Dinesh N. Khanna | 1989-09-12 |
| 4845183 | Heat resistant polyamide and polybenzoxazole from bis-((amino-hydroxyphenyl)hexafluoroisopropyl)diphenyl ethers | Dinesh N. Khanna | 1989-07-04 |
| 4842705 | Method for manufacturing transparent conductive indium-tin oxide layers | — | 1989-06-27 |
| 4822868 | Polycarbonamide of bis(2-(4-carboxyphenyl)-hexafluoroisopropyl)diphenyl ether | Dinesh N. Khanna | 1989-04-18 |
| 4803147 | Photosensitive polyimide polymer compositions | Dinesh N. Khanna, Rohitkumar H. Vora | 1989-02-07 |
| 4187438 | Circuit arrangement for unilaterally scanning distorted teletype characters | — | 1980-02-05 |