US2653109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-responsive fluorescent media
Assignee: JOSEPH L SWITZER
•
Filing: 1942-08-21
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Granted: 1953-09-22
•
Expires: 1962-08-21
Abstract
No abstract record available.
Inventors
- 👤 Joseph L Switzer
- 👤 Robert C Switzer
- 👤 Richard A Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:42
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/22; Y; Y10; Y10S; Y10S428/00; Y10S428/917; Y10T; Y10T428/00; Y10T428/31504
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
IN AN ARTICLE OF MANUFACTURE, DAYLIGHT FLUORESCENT MEDIA COMPRISING A LIGHT-TRANSMITTING CARRIER, A DAYLIGHT FLUORESCING ORGANIC DYE DISPERSED IN SAID CARRIER, THE MAXIMUM CONCENTRATION RATIO, BY WEIGHT, OF SAID DYE IN SAID CARRIER VARYING FROM FIVE PERCENT FOR BLUE AND GREEN DYES TO ONE PERCENT FOR RED DYES, AND A SUBSTANTIALLY COLORELESS ULTRAVIOLET ABSORBING AGENT IN A STRATUM OVER SAID DYE.
Claim 2
Dependent Claim
61 words
IN AN ARTICLE OF MANUFACTURE, DAYLIGHT FLUORESCENT MEDIA COMPRISING A LIGHT-TRANSMITTING CARRIER, A DAYLIGHT FLUORESCING ORGANIC DYE DISPERSED IN SAID CARRIER, THE MAXIMUM CONCENTRATION RATIO, BY WEIGHT, OF SAID DYE IN SAID CARRIER VARYING FROM FIVE PERCENT FOR BLUE AND GREEN DYES TO ONE PERCENT FOR RED DYES, AND A SUBSTANTIALLY COLORELESS ULTRAVIOLET ABSORBING AGENT IN A STRATUM OVER SAID DYE.
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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) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |