Primary Delivery Systems, Inc.
31Patents
0Active
31Granted
37Portfolio score
Filing activity: Nov 18, 1988 → Mar 25, 1999
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5082137A | Child resistant slide box | Performing Operations; Transporting | 106 | Expired |
| US4984709A | Non-reversing tablet dispenser with counter | Performing Operations; Transporting | 97 | Expired |
| US5082130A | Twist tube lift child proof cap and container | Human Necessities | 66 | Expired |
| US5967377A | Metered liquid dispenser with lift fill mechanism | Performing Operations; Transporting | 53 | Expired |
| US4957385A | Ampule solution dispenser applicator | Human Necessities | 52 | Expired |
| US4971203A | Child-resistant pill dispenser | Emerging Cross-Sectional Technologies | 50 | Expired |
| US5127553A | Metered liquid squeeze bottle | Physics | 47 | Expired |
| US4854459A | Convertible childproof/non-childproof cap and container | Performing Operations; Transporting | 47 | Expired |
| US5431283A | Blister pack opener-ejector | Performing Operations; Transporting | 44 | Expired |
| US5058778A | Squeeze type dispenser having an axially rotatable top element containing a flow closure and a vent | Performing Operations; Transporting | 33 | Expired |
| US5860572A | Side action vertical ratchet dispenser with reversible trigger | Performing Operations; Transporting | 32 | Expired |
| US5433329A | Child-resistant cap with independent open and close ratchet sets | Performing Operations; Transporting | 31 | Expired |
| US4875603A | Metered dispensing cap for tubes | Performing Operations; Transporting | 29 | Expired |
| US5503302A | Sealed container puncturer and spray dispensing device | Performing Operations; Transporting | 27 | Expired |
| US5853101A | Blister pack opener | Emerging Cross-Sectional Technologies | 27 | Expired |
| US5161706A | Twist and push snap-on child resistant cap | Performing Operations; Transporting | 26 | Expired |
| US5184760A | Metered side dispensing cap for tubes | Physics | 25 | Expired |
| US5636765A | Metered dispensing cap with manifold cover | Physics | 23 | Expired |
| US5509550A | Child resistant cap with automatic release key | Performing Operations; Transporting | 21 | Expired |
| US6202876A | Push and twist locking child-resistant and container | Performing Operations; Transporting | 15 | Expired |
| US5749496A | Squeeze and rotate to lift captive cap dispenser | Performing Operations; Transporting | 14 | Expired |
| US5372285A | Vertical ratchet gel-like material dispenser with hinged trigger | Performing Operations; Transporting | 14 | Expired |
| US5265777A | Push-push tilting dispensing cap system | Performing Operations; Transporting | 13 | Expired |
| US5356010A | Container with blister pack opener | Performing Operations; Transporting | 13 | Expired |
| US5320259A | Vertical ratchet dispenser with hinged trigger | Human Necessities | 12 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.