Patent US3298959A successfully refreshed from Google Patents.
US3298959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra violet light absorbing compositions having a suspension of submicron particles
Assignee: Individual
•
Filing: 1962-10-26
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Granted: 1967-01-17
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Expires: 1982-10-26
Abstract
No abstract record available.
Inventors
- 👤 Alvin M Marks
- 👤 Mortimer M Marks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:58
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/22; G02B5/223; G02B5/208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A COMPOSITION FOR PARTIALLY ABSORBING VISIBLE AND ABSORBING ULTRA VIOLET LIGHT COMPRISING A CLEAR TRANSPARENT PLASTIC FILM-FORMING SOLUTION AND A SUSPENSION IN SAID SOLUTION OF FROM 0.01% TO 2% BASED ON THE WEIGHT OF SAID SOLUTION OF LIGHT ABSORBING PARTICLES, SAID SOLUTION COMPRISING A SOLVENT PORTION AND A SOLUTE PORTION, SAID SOLVENT PORTION BEING COMPOSED OF FROM 5 TO 25% BY WEIGHT OF SLOW EVAPORATION RATE SOLVENTS AND THE BALANCE INTERMEDIATE EVAPORTION RATE SOLVENTS, SAID SOLUTE PORTION COMPRISING A TRANSPARENT FILM-FORMING PLASTIC MATERIAL IN AMOUNT NOT EXCEEDING ITS SOLUBILITY IN SAID SOLVENT PORTION, SAID PARTICLES HAVING A MAXIMUM DIAMETER NO GREATER THAN ABOUT 50 MILLICRONS AND AN AVERAGE DIAMETER NO GREATER THAN ABOUT 10 MILLICRONS, SAID PARTICLES BEING INSOLUBLE IN SAID SOLUTION AND UNREACTIVE THEREWITH, SAID COMPOSITION BEING CASTABLE AS A TRANSPARENT FILM SUBSTANTIALLY FREE OF LIGHT SCATTER, WHEREBY THE COMPOSITION WILL FLOW DOWNWARDLY FOR LONG DISTANCES TO FORM UPON DRYING A TRANSPARENT FILM.
Claim 2
Dependent Claim
154 words
A COMPOSITION FOR PARTIALLY ABSORBING VISIBLE AND ABSORBING ULTRA VIOLET LIGHT COMPRISING A CLEAR TRANSPARENT PLASTIC FILM-FORMING SOLUTION AND A SUSPENSION IN SAID SOLUTION OF FROM 0.01% TO 2% BASED ON THE WEIGHT OF SAID SOLUTION OF LIGHT ABSORBING PARTICLES, SAID SOLUTION COMPRISING A SOLVENT PORTION AND A SOLUTE PORTION, SAID SOLVENT PORTION BEING COMPOSED OF FROM 5 TO 25% BY WEIGHT OF SLOW EVAPORATION RATE SOLVENTS AND THE BALANCE INTERMEDIATE EVAPORTION RATE SOLVENTS, SAID SOLUTE PORTION COMPRISING A TRANSPARENT FILM-FORMING PLASTIC MATERIAL IN AMOUNT NOT EXCEEDING ITS SOLUBILITY IN SAID SOLVENT PORTION, SAID PARTICLES HAVING A MAXIMUM DIAMETER NO GREATER THAN ABOUT 50 MILLICRONS AND AN AVERAGE DIAMETER NO GREATER THAN ABOUT 10 MILLICRONS, SAID PARTICLES BEING INSOLUBLE IN SAID SOLUTION AND UNREACTIVE THEREWITH, SAID COMPOSITION BEING CASTABLE AS A TRANSPARENT FILM SUBSTANTIALLY FREE OF LIGHT SCATTER, WHEREBY THE COMPOSITION WILL FLOW DOWNWARDLY FOR LONG DISTANCES TO FORM UPON DRYING A TRANSPARENT FILM.
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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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |