Duphar International Research B.V.
171Patents
1Active
171Granted
42Portfolio score
Filing activity: Dec 10, 1975 → Apr 18, 2008 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5035860A | Detection strip for detecting and identifying chemical air contaminants, and portable detection kit comprising said strips | Physics | 299 | Expired |
| US5569192A | Automatic injector | Human Necessities | 273 | Expired |
| US4822340A | Automatic injector | Human Necessities | 235 | Expired |
| US4624660A | Automatic injection device | Human Necessities | 203 | Expired |
| US5071353A | Training device for an automatic injector | Physics | 140 | Expired |
| US4820286A | Automatic injector | Human Necessities | 125 | Expired |
| US4565543A | Automatic injection device | Emerging Cross-Sectional Technologies | 114 | Expired |
| US4529403A | Automatic injection syringe | Human Necessities | 113 | Expired |
| US5037306A | Training device for an automatic injector | Human Necessities | 110 | Expired |
| US4792329A | Multi-compartment syringe | Human Necessities | 95 | Expired |
| US5383864A | Pre-filled injection device comprising a barrel wherein a liquid diazepam formulation is accommodated | Human Necessities | 91 | Expired |
| US5273544A | Injection device | Human Necessities | 86 | Expired |
| US4661098A | Automatic injection device | Emerging Cross-Sectional Technologies | 64 | Expired |
| US5948410A | Influenza vaccine | Chemistry; Metallurgy | 63 | Expired |
| US5037844A | Substituted 1H-indazole-3-carboxamides | Chemistry; Metallurgy | 61 | Expired |
| US5219575A | Compositions with controlled zero-order delivery rate and method of preparing these compositions | Human Necessities | 58 | Expired |
| US4568346A | Hypodermic syringe having a telescopic assembly between cartridge and medicament holder | Human Necessities | 54 | Expired |
| US4235235A | Syringe | Human Necessities | 51 | Expired |
| US4496344A | Multiple-compartment syringe | Human Necessities | 47 | Expired |
| US4573971A | Automatic injection device | Human Necessities | 46 | Expired |
| US5223625A | Annelated indolo [3,2,-C]lactams | Chemistry; Metallurgy | 42 | Expired |
| US4554071A | Pre-column for preconcentrating substances to be chromatographed as well as device for a liquid chromatography system and coupling member for said device | Physics | 38 | Expired |
| US5328905A | 8,9-anellated-1,2,3,4-tetrahydro-.beta.-carboline derivatives | Chemistry; Metallurgy | 37 | Expired |
| US4668223A | Syringe | Human Necessities | 36 | Expired |
| US5412119A | Method of preparing vicinal aminoalcohols | Emerging Cross-Sectional Technologies | 32 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.