Patent US3271176A successfully refreshed from Google Patents.
US3271176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition of matter composed of a cyanoethylated cellulosic material and an inorganic photochromic material
Assignee: Wyeth Holdings LLC
•
Filing: 1962-11-21
•
Granted: 1966-09-06
•
Expires: 1982-11-21
Abstract
No abstract record available.
Inventors
- 👤 John A Chopoorian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:33
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/705
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
232 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF A CYANOETHYLATED CELLULOSIC MATERIAL HAVING UNIFORMLY DISPERSED THROUGHOUT THE BODY THEREOF FROM ABOUT 1.0% TO 70%, BY WEIGHT, BASED ON THE WEIGHT OF SAID MATERIAL, OF AN INORGANIC PHOTOCHROMIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF (A) TIO2 DOPED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF FE2O3, FEO, CR2O3, CUO, NIO, MNO2, MN2O3, MIXTURE OF FE2O3 AND NIO, A MIXTURE OF FE2O3 AND CUO, A MIXTURE OF FEO AND NIO AND A MIXTURE OF FEO AND CUO, (B) NB2O5 DOPED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF FE2O3, FEO, CR2O3, CUO, V2O5, MNO2 AND MN2O5, (C) AL2O3 DOPED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF CR2O3 AND V2O5, (D) ZNO2 DOPED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF CUO AND V2O5, (E) SNO2 DOPED WITH CUO, (F) ZRO2 DOPED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF CUO AND NIO, (G) TIO2 HEAT-REACTED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF MOO3 AND WO3, (H) ZNO HEAT-REACTED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF MOO3 AND WO3, (I) ZRO3 HEAT-REACTED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF MOO3 AND WO3, (J) SNO2 HEATREACTED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF MOO3 AND WO3, AND (K) GEO2 HEAT-REACTED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF MOO3 AND WO3.
Claim 2
Dependent Claim
232 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF A CYANOETHYLATED CELLULOSIC MATERIAL HAVING UNIFORMLY DISPERSED THROUGHOUT THE BODY THEREOF FROM ABOUT 1.0% TO 70%, BY WEIGHT, BASED ON THE WEIGHT OF SAID MATERIAL, OF AN INORGANIC PHOTOCHROMIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF (A) TIO2 DOPED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF FE2O3, FEO, CR2O3, CUO, NIO, MNO2, MN2O3, MIXTURE OF FE2O3 AND NIO, A MIXTURE OF FE2O3 AND CUO, A MIXTURE OF FEO AND NIO AND A MIXTURE OF FEO AND CUO, (B) NB2O5 DOPED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF FE2O3, FEO, CR2O3, CUO, V2O5, MNO2 AND MN2O5, (C) AL2O3 DOPED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF CR2O3 AND V2O5, (D) ZNO2 DOPED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF CUO AND V2O5, (E) SNO2 DOPED WITH CUO, (F) ZRO2 DOPED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF CUO AND NIO, (G) TIO2 HEAT-REACTED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF MOO3 AND WO3, (H) ZNO HEAT-REACTED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF MOO3 AND WO3, (I) ZRO3 HEAT-REACTED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF MOO3 AND WO3, (J) SNO2 HEATREACTED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF MOO3 AND WO3, AND (K) GEO2 HEAT-REACTED WITH AN OXIDE SELECTED FROM THE GROUP CONSISTING OF MOO3 AND WO3.
References Cited (Backward Citations)
US2184539A
Cited
US2724632A
Cited
GB829001A
Cited
US2944912A
Cited
US3097956A
Cited
US3197664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |