US3763647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polychromatic watch dial plate
Assignee: Kyoshin Sangyo Co Ltd
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Filing: 1972-09-22
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Granted: 1973-10-09
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Expires: 1992-09-22
Abstract
Abstract A polychromatic watch dial plate wherein either on the surface of the dial plate or on the figure portion is coated with a liquid crystal film so that the dial plate or the figure portion may have a variety of colors according to the change of the ambient temperature.
Inventors
- 👤 I Shibanai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:21
CPC Classifications
G; G04; G04B; G04B19/00; G04B19/06; G04B19/12; G04B47/00; G04B47/06; G04B47/068; G04D; G04D99/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
53 words
A polychromatic watch dial face plate with a liquid crystal film coating for varying the color of the dial face as a function of the ambient temperature, said dial face displaying a predetermined single color corresponding to a predetermined temperature, whereby the color of the dial face is indicative of the ambient temperature.
Claim 2
Dependent Claim
53 words
A polychromatic watch dial face plate with a liquid crystal film coating for varying the color of the dial face as a function of the ambient temperature, said dial face displaying a predetermined single color corresponding to a predetermined temperature, whereby the color of the dial face is indicative of the ambient temperature.
Claim 3
Dependent Claim
50 words
A polychromatic watch dial face plate as defined in claim 1 wherein said liquid crystal film coating is only on the dial face plate, the character portions of said dial face plate being free of said coating, so that said dial face changes colors with change in the ambient temperature.
Claim 4
Dependent Claim
40 words
The polychromatic watch dial face plate as defined in claim 1 wherein said liquid crystal film coating is only on the character portions of said dial face, so that said character portions only change color with change in ambient temperature.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |