US2800589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystal dosimeter
Assignee: Individual
•
Filing: 1955-12-14
•
Granted: 1957-07-23
•
Expires: 1975-12-14
Abstract
No abstract record available.
Inventors
- 👤 Paul W Levy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:14
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/02; G01T1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A DOSIMETER COMPRISING A PARALLEL-FACED CRYSTAL OF A MATERIAL GROWN FROM MGO AND AL2O3 IN THE PROPORTION ONE MOLECULE OF MGO TO APPROXIMATELY 3.5 MOLECULES OF AL3O3. SAID CRYSTAL HAVING DIMENSIONS BETWEEN THE PARALLEL FACES OF SUCH THICKNESS THAT THE CHANGE IN OPTICAL TRANSMISSION OF THE CRYSTAL THEREBETWEEN ON EXPOSURE TO
Claim 2
Dependent Claim
51 words
A DOSIMETER COMPRISING A PARALLEL-FACED CRYSTAL OF A MATERIAL GROWN FROM MGO AND AL2O3 IN THE PROPORTION ONE MOLECULE OF MGO TO APPROXIMATELY 3.5 MOLECULES OF AL3O3. SAID CRYSTAL HAVING DIMENSIONS BETWEEN THE PARALLEL FACES OF SUCH THICKNESS THAT THE CHANGE IN OPTICAL TRANSMISSION OF THE CRYSTAL THEREBETWEEN ON EXPOSURE TO
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |