US3049509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heterocyclic ultraviolet absorbers
Assignee: Wyeth Holdings LLC
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Filing: 1959-08-11
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Granted: 1962-08-14
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Expires: 1979-08-11
Abstract
No abstract record available.
Inventors
- 👤 William B Hardy
- 👤 Warren S Forster
- 👤 John F Hoster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:20
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/52; C07D263/54; C07D263/56; C07D263/57; C07D235/00; C07D235/02; C07D235/04; C07D235/18; C07D277/00; C07D277/60; C07D277/62; C07D277/64; C07D277/66; C08; C08K; C08K5/00; C08K5/0008; C08K5/0041; C08K5/36; C08K5/45; C08K5/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A FILM ESSENTIALLY COMPRISING A POLYMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF (A) POLYSTYRENES, (B) POLYVINYLIDENE CHLORIDES, (C) COPOLYMERS OF (B), ND) POLYVINYL CHLORIDES, (E) COPOLYMERS OF (D), (F) POLYESTERS, (G) POLYALKYLENE OXIDES, (H) SUPERPOLYAMIDES, (I) NITROCELLULOSE, (J) CELLULOSE ESTERS, AND (K) CELLULOSE ETHERS AND HAVING FROM .1% TO 5.0% BY WEIGHT OF AN ULTRAVIOLET ABSORBING COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2-R-BENZOXAZOLE, 2-R- BENZIMIDAZOLE AND 2-R-BENZOTHIAZOLE WHEREIN R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF /HYDROXYPHENYL AND O-HYDROXYNAPHTHYL, SAID COMPOUND BEARING FROM 0 TO 1 SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF CHLORO, HYDROXY AND ALKOXY.
Claim 2
Dependent Claim
101 words
A FILM ESSENTIALLY COMPRISING A POLYMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF (A) POLYSTYRENES, (B) POLYVINYLIDENE CHLORIDES, (C) COPOLYMERS OF (B), ND) POLYVINYL CHLORIDES, (E) COPOLYMERS OF (D), (F) POLYESTERS, (G) POLYALKYLENE OXIDES, (H) SUPERPOLYAMIDES, (I) NITROCELLULOSE, (J) CELLULOSE ESTERS, AND (K) CELLULOSE ETHERS AND HAVING FROM .1% TO 5.0% BY WEIGHT OF AN ULTRAVIOLET ABSORBING COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2-R-BENZOXAZOLE, 2-R- BENZIMIDAZOLE AND 2-R-BENZOTHIAZOLE WHEREIN R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF /HYDROXYPHENYL AND O-HYDROXYNAPHTHYL, SAID COMPOUND BEARING FROM 0 TO 1 SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF CHLORO, HYDROXY AND ALKOXY.
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) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |