US3280701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optically variable one-way mirror
Assignee: Magna Donnelly Corp
•
Filing: 1965-06-07
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Granted: 1966-10-25
•
Expires: 1985-06-07
Abstract
No abstract record available.
Inventors
- 👤 Donnelly John Fenlon
- 👤 Richard C Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:55
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10036; B32B17/10165; B32B17/10431; B32B17/10467; B32B17/10486; B32B17/1055; B32B17/10761; B60; B60R; B60R1/00; B60R1/02; B60R1/08; G; G02; G02B; G02B5/00; G02B5/08; G02F; G02F1/00; G02F1/01; G02F1/17; G02F1/176
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
AN OPTICALLY VARIABLE MIRROR, COMPRISING: A SUPPORTED ONE-WAY MIRROR SURFACE COMPRISING A PARTIALLY REFLECTIVE COATING ON A TRANSPARENT SURFACE; SAID SURFACE BEING GENERALLY TRANSPARENT WHEN THE LIGHT INTENSITY INCIDENT TO ONE SIDE THEREOF IS GREATER THAN THE LIGHT INTENSITY INCIDENT TO THE OPPOSITE SIDE, AND SAID SURFACE COMPRISING A REFLECTIVE MIRROR SURFACE WHEN THE LIGHT INTENSITY INCIDENT TO SAID OPPOSITE SIDE IS GREATER THAN THE LIGHT INTENSITY INCIDENT TO SAID ONE SIDE; A FIRST SUBSTANCE ADJACENT SAID ONE SIDE; FIRST MEANS TO APPLY A PREDETERMINED ENERGY POTENTIAL TO SAID FIRST SUBSTANCE; SAID FIRST SUBSTANCE HAVING AN OPACITY VARIABLE WITH SAID ENERGY POTENTIAL APPLIED THERETO SUCH THAT THE CHARACTERISTICES OF SAID SURFACE MAY BE ALTERED BETWEEN TRANSPARENCY AND REFLECTIVITY; AND A SECOND SUBSTANCE ADJACENT SAID OPPOSITE SIDE; SECOND MEANS TO APPLY A PREDETERMINED TYPE OF ENERGY POTENTIAL TO SAID SECOND SUBSTANCE; SAID SECOND SUBSTANCE BEING CAPABLE OF COLOR VARIATIONS WITH THE LATTER MENTIONED TYPE OF APPLIED ENERGY SUCH THAT THE REFLECTIVITY BRIGHTNESS FROM SAID SURFACE MAY BE VARIED.
Claim 2
Dependent Claim
167 words
AN OPTICALLY VARIABLE MIRROR, COMPRISING: A SUPPORTED ONE-WAY MIRROR SURFACE COMPRISING A PARTIALLY REFLECTIVE COATING ON A TRANSPARENT SURFACE; SAID SURFACE BEING GENERALLY TRANSPARENT WHEN THE LIGHT INTENSITY INCIDENT TO ONE SIDE THEREOF IS GREATER THAN THE LIGHT INTENSITY INCIDENT TO THE OPPOSITE SIDE, AND SAID SURFACE COMPRISING A REFLECTIVE MIRROR SURFACE WHEN THE LIGHT INTENSITY INCIDENT TO SAID OPPOSITE SIDE IS GREATER THAN THE LIGHT INTENSITY INCIDENT TO SAID ONE SIDE; A FIRST SUBSTANCE ADJACENT SAID ONE SIDE; FIRST MEANS TO APPLY A PREDETERMINED ENERGY POTENTIAL TO SAID FIRST SUBSTANCE; SAID FIRST SUBSTANCE HAVING AN OPACITY VARIABLE WITH SAID ENERGY POTENTIAL APPLIED THERETO SUCH THAT THE CHARACTERISTICES OF SAID SURFACE MAY BE ALTERED BETWEEN TRANSPARENCY AND REFLECTIVITY; AND A SECOND SUBSTANCE ADJACENT SAID OPPOSITE SIDE; SECOND MEANS TO APPLY A PREDETERMINED TYPE OF ENERGY POTENTIAL TO SAID SECOND SUBSTANCE; SAID SECOND SUBSTANCE BEING CAPABLE OF COLOR VARIATIONS WITH THE LATTER MENTIONED TYPE OF APPLIED ENERGY SUCH THAT THE REFLECTIVITY BRIGHTNESS FROM SAID SURFACE MAY BE VARIED.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |