US3075528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated hypodermic syringe ampul
Assignee: AstraZeneca AB
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Filing: 1959-11-24
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Granted: 1963-01-29
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Expires: 1979-11-24
Abstract
No abstract record available.
Inventors
- 👤 Lundgren Rudolf Adolf Isak
- 👤 Oom Bengt Olof Gustav
- 👤 Jarnhall Bertil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:33
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/05; A61J1/06; A61M; A61M5/00; A61M5/178; A61M5/28; B; B32; B32B; B32B27/00; A61M5/31; A61M5/3129; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
137 words
A LAMINATED HYPODERMIC SYRINGE AMPUL OF THE SELFASPIRATING TYPE HAVING A WALL CAPABLE OF BEING PIERCED BY THE REAR END OF A DOUBLE-ENDED CANNULA OF THE HYPODERMIC SYRINGE; SAID WALL COMPRISING A FIRST LAYER OF PLASTIC MATERIAL HAVING A PERMABILITY TO GASES OF LESS THAN 5.0 MG.MM./M.2.24H.CM. HG AND HAVING A PERMEABILITY TO WATER VAPOR OF LESS THAN 400 MG.MM./M.24H.CM. HG; A SECOND LAYER OF PLASTIC MATERIAL HAVING AN MODULUS OF ELASTICITY OF 10,000 TO 75,000 KG./CM.2 AND A THICKNESS SUFFICIENT TO PROVIDE AN ASPIRATING FORCE OF AT LEAST 0.1 KG./CM.2 TP THE AMPUL SOLELY DUE TO THE ELASTICITY OF SAID LAYERS; AND AN ADHESIVE LAYER BETWEEN SAID FIRST AND SAID SECOND LAYERS BEING AT LEAST 3 G/M.2 TO PROVIDE A SEAL WITH AN EXTERNAL SURFACE OF THE CANNULA AND TO BOND SAID FIRST AND SECOND LAYERS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |