US2498592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Daylight fluorescent pigment compositions
Assignee: Individual
•
Filing: 1945-01-30
•
Granted: 1950-02-21
•
Expires: 1965-01-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph L Switzer
- 👤 Robert C Switzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:26
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/06; Y; Y10; Y10S; Y10S252/00; Y10S252/96; Y10T; Y10T428/00; Y10T428/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A DAYLIGHT FLUORESCENT PIGMENT CONSISTING ESSENTIALLY OF A DYE EXHIBITING DAYLIGHT FLUORESCENCE WHEN IN DILUTE SOLUTION AND A PULVERIZED, TRANSPARENT POLYMERIZED THERMO-SET RESIN CARRIER SOLID IN WHICH SAID DYE IS SOLVATED, THE MAXIMUM RATIO OF DYE TO CARRIER VARYING ACCORDING TO THE WAVELENGTH OF THE DOMINANT WAVE-LENGTH OF LIGHT PROJECTED BY SAID SOLVATED DYE IN THE PROPORTION OF A MAXIMUM OF SUBSTANTIALLY .025 GRAM FOR DYES PROJECTING YELLOW-GREEN LIGHT TO A MAXIMUM OF SUBSTANTIALLY .015 GRAM FOR DYES PROJECTING RED LIGHT PER CUBIC CENTIMETER OF SOLVATING CARRIER AND SAID DYE RETAINING ITS DAYLIGHT FLUORESCENCE WHEN SOLVATED IN SAID CARRIER.
Claim 2
Dependent Claim
99 words
A DAYLIGHT FLUORESCENT PIGMENT CONSISTING ESSENTIALLY OF A DYE EXHIBITING DAYLIGHT FLUORESCENCE WHEN IN DILUTE SOLUTION AND A PULVERIZED, TRANSPARENT POLYMERIZED THERMO-SET RESIN CARRIER SOLID IN WHICH SAID DYE IS SOLVATED, THE MAXIMUM RATIO OF DYE TO CARRIER VARYING ACCORDING TO THE WAVELENGTH OF THE DOMINANT WAVE-LENGTH OF LIGHT PROJECTED BY SAID SOLVATED DYE IN THE PROPORTION OF A MAXIMUM OF SUBSTANTIALLY .025 GRAM FOR DYES PROJECTING YELLOW-GREEN LIGHT TO A MAXIMUM OF SUBSTANTIALLY .015 GRAM FOR DYES PROJECTING RED LIGHT PER CUBIC CENTIMETER OF SOLVATING CARRIER AND SAID DYE RETAINING ITS DAYLIGHT FLUORESCENCE WHEN SOLVATED IN SAID CARRIER.
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) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |