US2952575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Near-infrared spectrum filter media
Assignee: Monsanto Chemicals Ltd
•
Filing: 1958-05-16
•
Granted: 1960-09-13
•
Expires: 1978-05-16
Abstract
No abstract record available.
Inventors
- 👤 Donald H Baltzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:30
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/208; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
A NEAR INFRARED SPECTRUM FILTER MEDIUM COMPRISING IN COMBINATION A LUCENT SUPPORT MATERIAL AND A PARTICULATE SODIUM-TUNGSTATE COMPOSITION HAVING AN AVERAGE PARTICLE SIZE OF LESS THAN ABOUT 1000 MILLIMICRONS.
Claim 2
Dependent Claim
29 words
A NEAR INFRARED SPECTRUM FILTER MEDIUM COMPRISING IN COMBINATION A LUCENT SUPPORT MATERIAL AND A PARTICULATE SODIUM-TUNGSTATE COMPOSITION HAVING AN AVERAGE PARTICLE SIZE OF LESS THAN ABOUT 1000 MILLIMICRONS.
References Cited (Backward Citations)
US1624443A
Cited
US1604761A
Cited
US2150966A
Cited
US2327539A
Cited
US2624239A
Cited
US2704420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |