Issued Patents All Time
Showing 51–63 of 63 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4740320 | Process for preventing corrosion of a metal in contact with a well fluid | Robert G. Martinez | 1988-04-26 |
| 4725373 | Novel compositions prepared from alkyl substituted nitrogen-containing aromatic heterocyclic compounds and dicarboxylic acid monoanhydrides | James L. Potter | 1988-02-16 |
| 4724003 | Asphalt compositions containing anti-stripping additives prepared from hydrocarbyl substituted nitrogen-containing aromatic heterocyclic compounds, aldehydes or ketones and amines | Dane Chang | 1988-02-09 |
| 4701484 | Asphalt compositions containing anti-stripping additives prepared from amines or polyamines and aldehydes | Dane Chang | 1987-10-20 |
| 4680347 | Thermosettable polystyrylpyrazine polymers terminated with ethylenically unsaturated groups and cured products therefrom | — | 1987-07-14 |
| 4676834 | Novel compositions prepared from methyl substituted nitrogen-containing aromatic heterocyclic compounds and an aldehyde or ketone | — | 1987-06-30 |
| 4668766 | Preparation of thermosettable polymer or prepolymer from heterocyclic material containing nitrogen atoms, carboxylic acid mono- or dianhydride and a polymerizable material with ethylenically unsaturated group | — | 1987-05-26 |
| 4654414 | Thermosettable polymer or prepolymer prepared from heterocyclic material having alkyl substituent, mono- or dianhydride, ethylenically unsaturated material and a hydroxide, carbonate or bicarbonate of a metal of groups I-A or II-A | — | 1987-03-31 |
| 4629770 | Thermosettable polystyrylpyrazine polymers terminated with ethylenically unsaturated groups and cured products therefrom | — | 1986-12-16 |
| 4613663 | Thermoplastic and thermosettable products prepared by reacting nitrogen-containing heterocyclic compounds with aromatic aldehydes | — | 1986-09-23 |
| 4575542 | Thermosettable polystyrylpyridine prepolymer terminated with ethylenically unsaturated groups and cured products therefrom | — | 1986-03-11 |
| 4543388 | Thermosettable polymers or prepolymers prepared from polymethylated pyrazines and aromatic polyaldehydes and cured products therefrom | Loren L. Swearingen | 1985-09-24 |
| 4528391 | Pyrazino pyrazine compounds as catalysts for preparing urethanes | James L. Potter | 1985-07-09 |