US3733371A
Expired / Lapsed
US
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Iridescent composition and method of its preparation
Assignee: ZAIDAN HOJIN OYO KK
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Filing: 1971-02-05
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Granted: 1973-05-15
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Expires: 1991-02-05
Abstract
Abstract A STABILIZED LIGHT REFLECTING IRIDESCENT POLYMERIC MATERIAL IS PROVIDED. THE NEW MATERIAL COMPRISES A THREE DIMENSIONAL CLOSELY PACKED REGULARLY ARRANGED STRUCTURE OF UNIFORM POLYMERIC MICROSPHERES. THE MICROSPHERES ARE OBTAINED FROM A FILM FORMING POLYMERIC LATEX AND HAVE A PARTICLE DIAMETER IN THE RANGE FROM 1,000 TO 4,500 A. THE POLYMERIC STRUCTURE IS STABILIZED BY SURROUNDING THE MICROSPHERES WITH A POLYMERIC MATERIAL HAVING NO MEASURABLE SOLUBILIZING EFFECT ON THE MICROSPHERES AND HAVING A REFRACTIVE INDEX DIFFERING FROM THAT OF THE MICROSPHERES IN ABSOLUTE VALUE TO THE EXTENT OF UP TO 0.1 TO PROVIDE OPTICAL DISCONTINUITY.
Inventors
- 👤 A Kose
- 👤 Y Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:56
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/12; G02B5/126; G02B5/128; B; B44; B44F; B44F1/00; B44F1/08; B44F1/14
Claims Analysis
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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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |