Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4732991 | Substituted phthalides | Paul Schmidt | 1988-03-22 |
| 4647578 | Phototoxic insecticidal compositions and method of use thereof | James R. Heitz | 1987-03-03 |
| 4595768 | 3-(substituted phenyl)phthalides | Paul Schmidt | 1986-06-17 |
| 4536570 | N-Aminoalkylenesulfonamido substituted disazo colorants | — | 1985-08-20 |
| 4477676 | 4-(3-Indolyl)-2,3-dichloro-4-oxo-2-butenoic acids | Paul Schmidt | 1984-10-16 |
| 4451657 | 3,5- And 5,5-bis(3-indolyl)-2-(5H)furanones | Paul Schmidt | 1984-05-29 |
| 4448722 | Phthalocyanines | — | 1984-05-15 |
| 4412950 | Monoazo and disazo colorants | — | 1983-11-01 |
| 4379710 | Novel compositions and processes | — | 1983-04-12 |
| 4379088 | N-Aminoalkylenesulfonamido substituted monoazo colorants | — | 1983-04-05 |
| 4379089 | Polyaminoalkylenesulfonamidated disazo colorants | — | 1983-04-05 |
| 4377698 | 2,4 Bis(2-indolyl-3)-4-oxobutanoic acids | Paul Schmidt | 1983-03-22 |
| 4376729 | Novel monoazo and disazo colorants | — | 1983-03-15 |
| 4351768 | 2-[(3-Indolyl)carbonyl]-4/5-carboxybenzoic acids | Paul Schmidt | 1982-09-28 |
| 4322352 | Indolyl phthalide compounds | Paul Schmidt | 1982-03-30 |
| 4320140 | Synergistic insecticidal compositions | James R. Heitz | 1982-03-16 |
| 4307018 | Heteroarylphthalides | Paul Schmidt | 1981-12-22 |
| 4275121 | Carbonless duplicating and marking systems utilizing indolyl-substituted furanone color formers | Paul Schmidt | 1981-06-23 |
| 4251446 | Phthalide compounds, processes and marking systems | Paul Schmidt | 1981-02-17 |
| 4220357 | Diphenylphthalide duplicating and marking systems | Paul Schmidt | 1980-09-02 |
| 4217272 | Novel monoazo and disazo colorants from aminoalkylanilines and bis(aminoalkyl)anilines | — | 1980-08-12 |
| 4209618 | Morpholinodiphenylphthalides | Paul Schmidt | 1980-06-24 |
| 4206144 | N,N-Dialkyl-N-aminoalkyl-N-(amino or nitro)phenylalkyl- and N-methyl-N-[3-(amino or nitro)phenoxy-2-hydroxy-1-propyl]-N,N-bis(3-aminopropyl)quaternary ammonium salts | Patrick J. Jefferies | 1980-06-03 |
| 4189171 | Marking systems containing 3-aryl-3-heterylphthalides and 3,3-bis(heteryl)phthalides | Paul Schmidt | 1980-02-19 |