US2992938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing near-infrared spectrum filter media
Assignee: Monsanto Chemicals Ltd
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Filing: 1958-05-15
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Granted: 1961-07-18
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Expires: 1978-05-15
Abstract
No abstract record available.
Inventors
- 👤 William J Mccarville
- 👤 Bernard S Wildi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:59
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/208; G02B5/22; G02B5/223
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A METHOD OF A PREPARING AN INFRA-RED FILTER MEDIA COMPRISING DUSTING A COATING OF A FINELY DIVIDED MINUS 400-MESH, SOLID, INFRA-RED BARRIER COMPOSITION, SELECTED FROM THE GROUP CONSISTING OF ORGANIC DYES, ORGANOMETALLIC DYES, AND RHENIUM OXIDE, ONTO THE SURFACE OF A VISIBLE LIGHT TRANSMITTING PLASTIC MATERIAL AND BURNISHING THE INFRA-RED BARRIER COMPOSITION ONTO THE SURFACE OF SAID MATERIAL AND THE FINAL FILTER PRODUCT TRANSMITS VISIBLE LIGHT.
Claim 2
Independent Claim
66 words
A METHOD OF A PREPARING AN INFRA-RED FILTER MEDIA COMPRISING DUSTING A COATING OF A FINELY DIVIDED MINUS 400-MESH, SOLID, INFRA-RED BARRIER COMPOSITION, SELECTED FROM THE GROUP CONSISTING OF ORGANIC DYES, ORGANOMETALLIC DYES, AND RHENIUM OXIDE, ONTO THE SURFACE OF A VISIBLE LIGHT TRANSMITTING PLASTIC MATERIAL AND BURNISHING THE INFRA-RED BARRIER COMPOSITION ONTO THE SURFACE OF SAID MATERIAL AND THE FINAL FILTER PRODUCT TRANSMITS VISIBLE LIGHT.
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) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |