PFIZER INC.
🏢 View company profile →4,487Patents
1,064Active
4,487Granted
51Portfolio score
Filing activity: Jun 16, 1903 → Oct 1, 2024 · 331 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5431921A | Dispensing device containing a hydrophobic medium | Human Necessities | 783 | Expired |
| US5747498A | Alkynyl and azido-substituted 4-anilinoquinazolines | Chemistry; Metallurgy | 358 | Expired |
| US4341220A | Stereotactic surgery apparatus and method | Human Necessities | 336 | Expired |
| US6603008B1 | Sulfamoylheleroaryl pyrazole compounds as anti-inflammatory/analgesic agents | Chemistry; Metallurgy | 320 | Expired |
| US5593997A | 4-aminopyrazolo(3-,4-D)pyrimidine and 4-aminopyrazolo-(3,4-D)pyridine tyrosine kinase inhibitors | Chemistry; Metallurgy | 244 | Expired |
| US4896661A | Multi purpose orthopedic ratcheting forceps | Human Necessities | 229 | Expired |
| US6682736B1 | Human monoclonal antibodies to CTLA-4 | Chemistry; Metallurgy | 218 | Expired |
| US4601893A | Laminate device for controlled and prolonged release of substances to an ambient environment and method of use | Human Necessities | 214 | Expired |
| US5861510A | Arylsulfonyl hydroxamic acid derivatives as MMP and TNF inhibitors | Chemistry; Metallurgy | 199 | Expired |
| US7760137B2 | Portable position determining device | Electricity | 197 | Active |
| US5863949A | Arylsulfonylamino hydroxamic acid derivatives | Chemistry; Metallurgy | 194 | Expired |
| US5443843A | Gastric retention system for controlled drug release | Human Necessities | 179 | Expired |
| US4803076A | Controlled release device for an active substance | Performing Operations; Transporting | 167 | Expired |
| US4895724A | Chitosan compositions for controlled and prolonged release of macromolecules | Human Necessities | 161 | Expired |
| US4599198A | Intermediates in polypeptide synthesis | Emerging Cross-Sectional Technologies | 159 | Expired |
| US4750482A | Hydrophilic, elastomeric, pressure-sensitive adhesive | Chemistry; Metallurgy | 157 | Expired |
| US5030654A | Glutaramide diuretic agents | Chemistry; Metallurgy | 157 | Expired |
| US5362852A | Modified peptide derivatives conjugated at 2-hydroxyethylamine moieties | Human Necessities | 154 | Expired |
| US6436938B1 | Combination treatment for depression | Human Necessities | 145 | Expired |
| US5250534A | Pyrazolopyrimidinone antianginal agents | Chemistry; Metallurgy | 143 | Expired |
| US4879303A | Pharmaceutically acceptable salts | Human Necessities | 134 | Expired |
| US6506762B1 | Certain alkylene diamine-substituted heterocycles | Physics | 126 | Expired |
| US4831031A | Aryl piperazinyl-(C.sub.2 or C.sub.4) alkylene heterocyclic compounds having neuroleptic activity | Chemistry; Metallurgy | 126 | Expired |
| US4474768A | N-Methyl 11-aza-10-deoxo-10-dihydro-erytromycin A, intermediates therefor | Human Necessities | 118 | Expired |
| US4220152A | Delivery system | Human Necessities | 118 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.