US2922724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing iridescence
Assignee: FRANCIS EARLE LAB Inc
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Filing: 1957-07-01
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Granted: 1960-01-26
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Expires: 1977-07-01
Abstract
No abstract record available.
Inventors
- 👤 Leon M Greenstein
- 👤 William G Young
- 👤 Charles A Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:23
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/28; G02B5/285; G02B5/287; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/26; Y10T428/261
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
THE METHOD FOR PRODUCING AN IRIDESCENT EFFECT ON AN ARTICLE COMPRISING, APPLYING TO SAID ARTICLE A DISPERSION OF SMOOTH-SURFACED LAMELLAE, HAVING AN INDEX OF REFRACTION OF AT LEAST 1.80, IN LIQUID MEDIUM CAPABLE OF WETTING THE SURFACE OF SAID LAMELLAE, EVAPORATING SAID LIQUID MEDIUM, THEREBY FORMING ON SAID ARTICLE A SMOOTH, CONTINUOUS, LAMELLAR COATING, AND THEN DIRECTLY APPLYING TO THE SAID LAMELLAR COATING A SMOOTH, CONTINUOUS FILM OF A TRANSPARENT MATERIAL, SAID FILM BEING OF A THICKNESS OF THE ORDER OF
Claim 2
Independent Claim
81 words
THE METHOD FOR PRODUCING AN IRIDESCENT EFFECT ON AN ARTICLE COMPRISING, APPLYING TO SAID ARTICLE A DISPERSION OF SMOOTH-SURFACED LAMELLAE, HAVING AN INDEX OF REFRACTION OF AT LEAST 1.80, IN LIQUID MEDIUM CAPABLE OF WETTING THE SURFACE OF SAID LAMELLAE, EVAPORATING SAID LIQUID MEDIUM, THEREBY FORMING ON SAID ARTICLE A SMOOTH, CONTINUOUS, LAMELLAR COATING, AND THEN DIRECTLY APPLYING TO THE SAID LAMELLAR COATING A SMOOTH, CONTINUOUS FILM OF A TRANSPARENT MATERIAL, SAID FILM BEING OF A THICKNESS OF THE ORDER OF
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) | 1963-01-25 | 1963-07-27 | 1964-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-25 | 1967-07-27 | 1968-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-25 | 1971-07-27 | 1972-01-26 | $7700.00 | Window Closed / Lapsed |