Helmut Biere
30Patents
7h-index
35Co-inventors
69Inventor score
Filing activity: Jul 9, 1974 → May 18, 1994
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3960949A | 1,2-Biguanides | Chemistry; Metallurgy | 80 | Expired |
| US4987146A | N-hetaryl imidazole derivatives | Chemistry; Metallurgy | 23 | Expired |
| US4503049A | Diphosphonic acid derivatives and pharmaceutical preparations containing them | Chemistry; Metallurgy | 22 | Expired |
| US4457927A | Pyrido[2,1-b]quinazolinone derivatives and the preparation and use thereof | Chemistry; Metallurgy | 16 | Expired |
| US4473560A | Diphosphonic acid derivatives and pharmaceutical preparations containing them | Chemistry; Metallurgy | 11 | Expired |
| US3956295A | Carbazole derivatives | Human Necessities | 9 | Expired |
| US4731358A | .beta.-carbolines and their use as tranquilizers | Chemistry; Metallurgy | 8 | Expired |
| US4952698A | Imidazole derivatives | Chemistry; Metallurgy | 7 | Expired |
| US4877792A | Heteroaryloxy-beta-carboline derivatives, their preparation and their use as medicinal agents | Human Necessities | 6 | Expired |
| US5179111A | Imidazole derivatives | Chemistry; Metallurgy | 6 | Expired |
| US4645762A | Diphosphonic acid derivatives and pharmaceutical preparations containing same | Chemistry; Metallurgy | 6 | Expired |
| US4057640A | 5,6,7,8:Tetrahydrocarbazole-1-carboxylic acid derivatives | Human Necessities | 6 | Expired |
| US4705856A | Process for producing .beta.-carboline derivatives | Chemistry; Metallurgy | 5 | Expired |
| US4042706A | Novel anti-inflammatory pyrazole derivatives and preparation thereof | Chemistry; Metallurgy | 5 | Expired |
| US4960777A | Heteroaryloxy-.beta.-carboline derivatives, their preparation and their use as medicinal agents | Human Necessities | 5 | Expired |
| US4021450A | Thiophene derivatives and their preparation | Chemistry; Metallurgy | 4 | Expired |
| US3962471A | Indolylacetylamino acid derivatives, process for their preparation, and pharmaceutical compositions | Chemistry; Metallurgy | 4 | Expired |
| US4855295A | Tetrahydro-beta-carbolines, and their use as drugs | Human Necessities | 4 | Expired |
| US3962453A | Novel pyrazolyloxyacetic acid derivatives and process for the preparation thereof | Human Necessities | 3 | Expired |
| US4731365A | 5-aminoalkyl-beta-carboline derivatives, psycho tropic compositions and use | Human Necessities | 3 | Expired |
| US4757070A | 3-oxadiazolyl-5-aminoalkyl-beta-carboline derivatives compositions and use | Human Necessities | 3 | Expired |
| US4031236A | Novel thiophene derivatives and their preparation | Chemistry; Metallurgy | 3 | Expired |
| US4968801A | Process for the production ergoline derivatives | Chemistry; Metallurgy | 2 | Expired |
| US5414002A | 5- or 6-substituted .beta.-carboline-3-carboxylic acid esters | Human Necessities | 1 | Expired |
| US4772610A | 1-alkyl ergolinylthiourea derivatives and their use as antidepressant agents | Human Necessities | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.