Patent US3157481A successfully refreshed from Google Patents.
US3157481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air filter assembly
Assignee: Abbott Laboratories
•
Filing: 1961-12-11
•
Granted: 1964-11-17
•
Expires: 1981-12-11
Abstract
No abstract record available.
Inventors
- 👤 Albert F Bujan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:02
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/162; A61M2005/1623; A61M39/00; A61M39/20; A61M2039/205; A61M2205/00; A61M2205/75; A61M2205/7536; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49917; Y10T29/49918; Y10T29/4992; Y10T29/49938
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
AN AIR FILTER ASSEMBLY COMPRISING A HOLLOW, OPENENDED FITMENT ADAPTED TO COMMUNICATE WITH A PARENTERAL FLUID, A HOLLOW PLASTIC BODY DEFINING A MAIN BORE AND AN AUXILIARY BORE OF GREATER DIAMETER THAN SAID MAIN BORE AND INTERCONNECTED BY A SHOULDER TO SAID MAIN BORE, A PLURALITY OF VERTICALLY SPACED SEALING RINGS MOUNTED IN SAID AUXILIARY BORE AND SEALINGLY ENGAGING THE OUTER SURFACES OF SAID FITMENT, THE PROXIMAL END OF SAID FITMENT BEING SEALINGLY SEATED AGAINST SAID SHOULDER, A SECOND SHOULDER NEAR THE PROXIMASL END OF SAID HOLLOW MEMBER, AN AIR FILTER DISC COMPRISING STRUCTURALLY REINFORCED COPOLYMER OF TETRAFLUOROETHYLENE AND HEXAFLUOROPROPYLENE IN SEALING ABUTTING RELATING ON ONE SIDE AT ITS MARGINAL EDGE WITH
Claim 2
Dependent Claim
112 words
AN AIR FILTER ASSEMBLY COMPRISING A HOLLOW, OPENENDED FITMENT ADAPTED TO COMMUNICATE WITH A PARENTERAL FLUID, A HOLLOW PLASTIC BODY DEFINING A MAIN BORE AND AN AUXILIARY BORE OF GREATER DIAMETER THAN SAID MAIN BORE AND INTERCONNECTED BY A SHOULDER TO SAID MAIN BORE, A PLURALITY OF VERTICALLY SPACED SEALING RINGS MOUNTED IN SAID AUXILIARY BORE AND SEALINGLY ENGAGING THE OUTER SURFACES OF SAID FITMENT, THE PROXIMAL END OF SAID FITMENT BEING SEALINGLY SEATED AGAINST SAID SHOULDER, A SECOND SHOULDER NEAR THE PROXIMASL END OF SAID HOLLOW MEMBER, AN AIR FILTER DISC COMPRISING STRUCTURALLY REINFORCED COPOLYMER OF TETRAFLUOROETHYLENE AND HEXAFLUOROPROPYLENE IN SEALING ABUTTING RELATING ON ONE SIDE AT ITS MARGINAL EDGE WITH
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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |