US2960415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared filter and method of producing the same
Assignee: Polan Ind Inc
•
Filing: 1958-06-23
•
Granted: 1960-11-15
•
Expires: 1978-06-23
Abstract
No abstract record available.
Inventors
- 👤 Lincoln M Polan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:44
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/22; G02B5/223
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
58 words
THE METHOD OF PRODUCING AN INFRARED FILTER HAVING A GLASS BASE COATED WITH INFRARED TRANSMITTING LAYERS WHICH COMPRISES APPLYING TO THE SURFACE OF THE GLASS A COATING OF METHACRYLATE CHROMIC CHLORIDE, APPLYING TO ONE METHACRYLATE CHROMIC CHLORIDE TREATED GLASS SURFACE A COATING OF A MIXTURE OF POLYVINYLIDENE CHLORIDE AND EPICHLORHYDRIN POLYMERS, APPLYING TO THE SURFACE THUS TREATED A
References Cited (Backward Citations)
US2579543A
Cited
US2544666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |