Pierrel SpA
25Patents
0Active
25Granted
30Portfolio score
Filing activity: Feb 26, 1975 → Jun 19, 1992
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4514562A | Fluorinated erythromycin compounds and a process for preparation | Human Necessities | 14 | Expired |
| US4774325A | New 8-substituted nucleoside and purine derivatives, the process for the preparation thereof and the pharmaceutical compositions containing them | Chemistry; Metallurgy | 14 | Expired |
| US4588712A | (8S)-8-fluoroerythromycin derivatives, the process for the preparation thereof and the pharmaceutical compositions containing them | Human Necessities | 14 | Expired |
| US4902790A | Novel process for the synthesis of amikacin | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5010056A | Pharmaceutical composition for intranasal administration, comprising GH-releasing hormone, a cholinergic agonist and optionally a bile salt | Human Necessities | 8 | Expired |
| US4226862A | Steroids and process for preparing the same | Chemistry; Metallurgy | 7 | Expired |
| US4439426A | Semisynthetic macrolidic antibiotics, intermediate compounds for their preparation and related pharmaceutical compositions containing them | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4526985A | Process for the preparation of the anhydride of N-formyl-L-aspartic acid | Chemistry; Metallurgy | 3 | Expired |
| US4673736A | Process for the preparation of (8S)-8-fluoroerythromycins | Chemistry; Metallurgy | 3 | Expired |
| US4181740A | Indolyl acetic acid derivative | Chemistry; Metallurgy | 3 | Expired |
| US4272446A | Steroids and process for preparing the same | Chemistry; Metallurgy | 2 | Expired |
| US4508719A | Hydroxyimino and alkoxyimino derivatives of 1,4-dihydropyridine and anti-hypertensive compositions | Chemistry; Metallurgy | 2 | Expired |
| US4894460A | Basic esters exhibiting an antagonistic activity to calcium, process for the preparation thereof and pharmaceutical compositions therefrom | Chemistry; Metallurgy | 2 | Expired |
| US4429115A | 3-O-Oleandrosyl-5-O-desosaminyl erythronolide compounds | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4013679A | Substituted 6,7-dihydro [1,7-ab](1) benzazepine compounds | Chemistry; Metallurgy | 2 | Expired |
| US4275061A | Steroids and process for preparing the same | Chemistry; Metallurgy | 2 | Expired |
| US4560662A | Streptomyces antibioticus ATCC 31771 and process for obtaining same | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4579861A | Aryloxypropanolamine derivatives, pharmaceutical compositions and adrenegic thereof | Chemistry; Metallurgy | 1 | Expired |
| US5470858A | Derivatives of (hetero)aromatic ethers and thioethers having antihyperlipidemic activity, process for their preparation and pharmaceutical compositions containing them | Chemistry; Metallurgy | 1 | Expired |
| US4390533A | Steroids and process for preparing the same | Chemistry; Metallurgy | 0 | Expired |
| US4540662A | Semisynthetic macrolidic antibiotics, intermediate compounds for their preparation and related pharmaceutical compositions containing compounds for their preparation and related pharmaceutical compositions containing them | Emerging Cross-Sectional Technologies | 0 | Expired |
| US4347247A | Pharmacological preparation composed of a quinoxaline derivative mixed with sodium bicarbonate | Human Necessities | 0 | Expired |
| US4073903A | 3-Desacetoxymethyl-3- 5'(1-methyltetrazolyl)thio!methyl-7- 1-(4-nitr oimidazolyl)acetyl!aminocephalosporanic acid | Human Necessities | 0 | Expired |
| US4299962A | Process for synthesizing 2-sulphanilamido-3-methoxypyrazine | Chemistry; Metallurgy | 0 | Expired |
| US4434097A | Process for the removal of the formyl group from N-formyl peptides and esters thereof | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.