US2776598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mirror having a dichroic layer
Assignee: CHARLES P DREYER
•
Filing: 1951-04-13
•
Granted: 1957-01-08
•
Expires: 1971-04-13
Abstract
No abstract record available.
Inventors
- 👤 John F Dreyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:33
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/08; B; B60; B60R; B60R1/00; B60R1/02; B60R1/08; B60R1/083; G02B1/105; G02B1/00; G02B1/10; G02B1/14; G02B5/0808; G02B5/0816; G02B5/085; G02B5/0858; G02B5/30; G02B5/3025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE METHOD OF FORMING A MIRROR WHICH COMPRISES PROVIDING A TRANSPARENT LAYER, GIVING THE MATERIAL AT THE SURFACE OF SAID LAYER A DESIRED ORIENTATION, SPREADING ON SAID SURFACE OF FREE-FLOWING SOLUTION OF A DICHROIC MATERIAL CAPABLE OF PASSING THROUGHT THE NEMATIC STATE, PASSING SAID MATERIAL THROUGH THE NEMATIC STATE WHILE UNDER THE INFLUENCE OF SAID ORIENTED SURFACE TO ORIENT THE MOLECULES OF SAID DICHROIC MATERIAL IN CONFORMITY TO SAID DESIRED ORIENTATION AT THE SURFACE OF SAID LAYER, AND SOLIDIFYING SAID DICHROIC MATERIAL WHILE THE MOLECULES THEREOF REMAIN ORIENTED, AND DEPOSITING A MIRROR REFLECTING MATERIAL ON THE RESULTING DICHLORIC LAYER.
Claim 2
Independent Claim
99 words
THE METHOD OF FORMING A MIRROR WHICH COMPRISES PROVIDING A TRANSPARENT LAYER, GIVING THE MATERIAL AT THE SURFACE OF SAID LAYER A DESIRED ORIENTATION, SPREADING ON SAID SURFACE OF FREE-FLOWING SOLUTION OF A DICHROIC MATERIAL CAPABLE OF PASSING THROUGHT THE NEMATIC STATE, PASSING SAID MATERIAL THROUGH THE NEMATIC STATE WHILE UNDER THE INFLUENCE OF SAID ORIENTED SURFACE TO ORIENT THE MOLECULES OF SAID DICHROIC MATERIAL IN CONFORMITY TO SAID DESIRED ORIENTATION AT THE SURFACE OF SAID LAYER, AND SOLIDIFYING SAID DICHROIC MATERIAL WHILE THE MOLECULES THEREOF REMAIN ORIENTED, AND DEPOSITING A MIRROR REFLECTING MATERIAL ON THE RESULTING DICHLORIC LAYER.
References Cited (Backward Citations)
US2167899A
Cited
US2252324A
Cited
US2382432A
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US2398506A
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US2366687A
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US2400877A
Cited
US2411955A
Cited
US2443196A
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US2484818A
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US2524286A
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US2466625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |