US3288625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical device having an infrared radiation transmitting and visible radiation reflecting layer of lanthanum hexaboride
Assignee: US Philips Corp
•
Filing: 1964-05-13
•
Granted: 1966-11-29
•
Expires: 1984-05-13
Abstract
No abstract record available.
Inventors
- 👤 Kauer Erhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:29
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/208; G02B5/08; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
AN OPTICAL DEVICE COMPRISING A SUBSTRATE PROVIDED WITH A COATING OF AN INFRA-RED REFLECTING LAYER HAVING A LOW REFLECTIVITY FOR VISIBLE RADIATION, SAID LAYER BEING CONSTITUTED OF LANTHANUMHEXABORIDE.
Claim 2
Dependent Claim
28 words
AN OPTICAL DEVICE COMPRISING A SUBSTRATE PROVIDED WITH A COATING OF AN INFRA-RED REFLECTING LAYER HAVING A LOW REFLECTIVITY FOR VISIBLE RADIATION, SAID LAYER BEING CONSTITUTED OF LANTHANUMHEXABORIDE.
References Cited (Backward Citations)
US3099403A
Cited
US3209188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |