US2638560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved window for alpha particle counters
Assignee: United States Atomic Energy Commission
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Filing: 1945-11-13
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Granted: 1953-05-12
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Expires: 1965-11-13
Abstract
No abstract record available.
Inventors
- 👤 Casimer J Borkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:38
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/02; H01J5/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
IN AN ALPHA-PARTICLE-RESPONSIVE RADIATIONSENSITIVE DEVICE, AN IMPROVED WINDOW FOR SERVING AS AN INGRESS FOR ENTERING ALPHA PARTICLES AND ADAPTED TO WITHSTAND A SUBSTANTIAL PRESSURE DIFFERENTIAL, WHICH COMPRISES A FLIM OF NYLON COMPRISING ESSENTIALLY A POLYMERIC CONDENSATION PRODUCT OF HEXAMETHYLENEDIAMINE AND ADIPIC ACID, SAID FILM BEING SUBSTANTIALLY DISTENDED, IN ITS PLANE, OUTWARDLY IN ALL RADIAL DIRECTIONS 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) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |