US2874299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ionization recording capsules
Assignee: Individual
•
Filing: 1952-06-30
•
Granted: 1959-02-17
•
Expires: 1972-06-30
Abstract
No abstract record available.
Inventors
- 👤 Walter H Barkas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:46
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/02; G01T1/08; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2989
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
AN ARTICLE OF MANUFACTURE FOR MEASURING IONIZATION RADIATION IN A PARTICULAR ENVIROMENT, COMPRISING A PELLET CONTAINING PHOTOGRAPHIC EMULSION, A COATING OF GELATIN COVERING SAID PELLET, AND ON OUTER OPTICALLY OPAQUE COVERING SUROUNDING SAID COATED PELLET, SAID OPAQUE COVERING BEING OF SUBSTANTIALLY THE SAME DENSITY AS, AND BEING COMPOSED OF SUBSTANTIALLY THE SAME CHEMICAL ELEMENTS IN SUBSTANTIALLY ATHE SAME PORPORTIONS AS THE MATERIAL OF SAID ENVIROMENT.
Claim 2
Dependent Claim
65 words
AN ARTICLE OF MANUFACTURE FOR MEASURING IONIZATION RADIATION IN A PARTICULAR ENVIROMENT, COMPRISING A PELLET CONTAINING PHOTOGRAPHIC EMULSION, A COATING OF GELATIN COVERING SAID PELLET, AND ON OUTER OPTICALLY OPAQUE COVERING SUROUNDING SAID COATED PELLET, SAID OPAQUE COVERING BEING OF SUBSTANTIALLY THE SAME DENSITY AS, AND BEING COMPOSED OF SUBSTANTIALLY THE SAME CHEMICAL ELEMENTS IN SUBSTANTIALLY ATHE SAME PORPORTIONS AS THE MATERIAL OF SAID ENVIROMENT.
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) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |