US3296478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proportional counter having a polycarbonate window
Assignee: Individual
•
Filing: 1962-04-20
•
Granted: 1967-01-03
•
Expires: 1982-04-20
Abstract
No abstract record available.
Inventors
- 👤 Ichinokawa Takeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:48
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/02; H01J5/18; G; G01; G01N; G01N23/00; G01N23/20; G01N23/20008; H01J47/00; H01J47/06; G01N2223/00; G01N2223/07; G01N2223/076; G01N2223/079; G01N2223/30; G01N2223/317; G01N2223/50; G01N2223/502
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A PROPORTIONAL COUNTER HAVING AN ENTRANCE WINDOW FOR X-RAYS WHICH IS FORMED OF A FILM OF POLYCARBONATE RESIN OF LESS THAN ABOUT 1 MICRON IN THICKNESS, WHEREBY A LONG-WAVE X-RAY, IN PARTICULAR THE CHARACTERISTIC X-RAY OF CARBON, CAN BE DETECTED EFFECTIVELY.
Claim 2
Dependent Claim
41 words
A PROPORTIONAL COUNTER HAVING AN ENTRANCE WINDOW FOR X-RAYS WHICH IS FORMED OF A FILM OF POLYCARBONATE RESIN OF LESS THAN ABOUT 1 MICRON IN THICKNESS, WHEREBY A LONG-WAVE X-RAY, IN PARTICULAR THE CHARACTERISTIC X-RAY OF CARBON, CAN BE DETECTED EFFECTIVELY.
References Cited (Backward Citations)
US2925509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |