DRACO LTD.
42Patents
0Active
42Granted
35Portfolio score
Filing activity: Jun 21, 1973 → Sep 23, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5331953A | Device in connection with an inhaler | Human Necessities | 286 | Expired |
| US4668218A | Indicating means for a dosage dispensing device | Human Necessities | 257 | Expired |
| US4524769A | Dosage inhalator | Human Necessities | 235 | Expired |
| US4907583A | Device in powder inhalators | Human Necessities | 215 | Expired |
| US4534345A | Dosage inhalator | Human Necessities | 182 | Expired |
| US4693999A | Liposomes containing steroid esters | Chemistry; Metallurgy | 99 | Expired |
| US4667668A | Dosage inhalator | Human Necessities | 72 | Expired |
| US4805811A | Dosage device | Physics | 65 | Expired |
| US4363806A | Pharmaceutical composition | Human Necessities | 65 | Expired |
| US4641644A | Aerosol inhalation device | Human Necessities | 63 | Expired |
| US4114615A | Aerosol inhalation device | Human Necessities | 59 | Expired |
| USD276654S | Medical aerosol inhalation device | General | 57 | Expired |
| US4787536A | Dosage package | Physics | 50 | Expired |
| US4174712A | Device for use with medicinal inhalation devices | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4292966A | Aerosol inhalation device | Human Necessities | 35 | Expired |
| US4137914A | Aerosol inhalation device | Human Necessities | 33 | Expired |
| USD262320S | Inhalation chamber for medical aerosols | General | 24 | Expired |
| US4325956A | Method and pharmaceutical preparation for treating chronic obstructive airway disease and cardiac disease, and intermediates for the preparation of therapeutically active xanthine derivatives | Chemistry; Metallurgy | 22 | Expired |
| US3937838A | Orally active bronchospasmolytic compounds and their preparation | Chemistry; Metallurgy | 20 | Expired |
| US4233303A | Xanthine derivatives | Chemistry; Metallurgy | 20 | Expired |
| US4292324A | Aqueous zinc solutions for medical use | Human Necessities | 19 | Expired |
| US4804664A | Method and pharmaceutical preparation for treating chronic obstructive airway disease and cardiac disease, and intermediates for the preparation of therapeutically active xanthine derivatives | Chemistry; Metallurgy | 18 | Expired |
| US4011258A | Orally active bronchospasmolytic compounds | Chemistry; Metallurgy | 17 | Expired |
| USD276847S | Medical aerosol inhalation device | General | 14 | Expired |
| US4419364A | Bronchospasmolytic carbamate derivatives | Human Necessities | 12 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.