Patent US2956027A successfully refreshed from Google Patents.
US2956027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent coating composition
Assignee: STWB Inc
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Filing: 1956-12-10
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Granted: 1960-10-11
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Expires: 1976-12-10
Abstract
No abstract record available.
Inventors
- 👤 Thompson Edna Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:12
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/22; C09K; C09K11/00; C09K11/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
74 words
A FLUORESCENT COATING COMPOSITION COMPRISING A SUBSTANTIALLY COLORLESS VARNISH HAVING INCORPORATED THEREIN MINOR PROPORTIONS BY WEIGHT OF A COMPOUND WHICH FLUORESCES RED UNDER ULTRAVIOLET LIGHT, A COMPOUND WHICH FLUORESCES BLUD UNDER ULTRAVIOLET LIGHT, AND A COMPOUND WHICH FLUORESCES YELLOW UNDER ULTRAVIOLET LIGHT, EACH OF SAID COMPOUNDS BEING SUBSTANTIALLY COLORLESS IN DILUTE SOLUTION BY DAYLIGHT AND BEING IN SUCH PROPORTION TO EACH OTHER THAT THE MIXTURE FLUORESCES WHITE OVER A WHITE SURFACE UNER ULTRAVIOLET LIGHT.
Claim 2
Dependent Claim
74 words
A FLUORESCENT COATING COMPOSITION COMPRISING A SUBSTANTIALLY COLORLESS VARNISH HAVING INCORPORATED THEREIN MINOR PROPORTIONS BY WEIGHT OF A COMPOUND WHICH FLUORESCES RED UNDER ULTRAVIOLET LIGHT, A COMPOUND WHICH FLUORESCES BLUD UNDER ULTRAVIOLET LIGHT, AND A COMPOUND WHICH FLUORESCES YELLOW UNDER ULTRAVIOLET LIGHT, EACH OF SAID COMPOUNDS BEING SUBSTANTIALLY COLORLESS IN DILUTE SOLUTION BY DAYLIGHT AND BEING IN SUCH PROPORTION TO EACH OTHER THAT THE MIXTURE FLUORESCES WHITE OVER A WHITE SURFACE UNER ULTRAVIOLET LIGHT.
Claim 3
Dependent Claim
37 words
A FLUORESCENT COATING COMPOSITION COMPRISING A SUBSTANTIALLY COLORLESS VARNISH CONSISTING ESSENTIALLY OF A RESIN AND A SOLVENT FOR SAID RESIN, AND APPROXIMATELY EQUAL MINOR PROPORTIONS BY WEIGHT OF 2-(3-HYDROXY-2NAPHTHYL)BENZIMIDAZOLE, 4-METHYL - 7 - DIMETHYLAMINOCOUMARIN, AND 3,7-BIS(PHENYLCARBAMYLAMINO) DIBENZOTHIOPHENE-5,5-DIOXIDE.
Claim 4
Dependent Claim
37 words
A FLUORESCENT COATING COMPOSITION COMPRISING A SUBSTANTIALLY COLORLESS VARNISH CONSISTING ESSENTIALLY OF A RESIN AND A SOLVENT FOR SAID RESIN, AND APPROXIMATELY EQUAL MINOR PROPORTIONS BY WEIGHT OF 2-(3-HYDROXY-2NAPHTHYL)BENZIMIDAZOLE, 4-METHYL - 7 - DIMETHYLAMINOCOUMARIN, AND 3,7-BIS(PHENYLCARBAMYLAMINO) DIBENZOTHIOPHENE-5,5-DIOXIDE.
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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) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |