US4260719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
UV stabilized polycarbonate resins
Assignee: General Electric Co
•
Filing: 1980-03-17
•
Granted: 1981-04-07
•
Expires: 2000-03-17
Abstract
Abstract Polycarbonate resins can be rendered resistant to ultraviolet light by chain-stopping the resins with certain cyanoacrylate moieties.
Inventors
- 👤 Ta-Yen Ching
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:19
CPC Classifications
C; C08; C08G; C08G64/00; C08G64/16; C08G64/1691; C08G63/00; C08G63/68; C08G63/685; C08G64/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
30 words
A UV-stable aromatic polycarbonate resin chain-stopped with a grouping having the formula ##STR12## where X is a divalent saturated alkylene or alkylidene radical of the C 1 -C 10 series.
Claim 2
Dependent Claim
30 words
A UV-stable aromatic polycarbonate resin chain-stopped with a grouping having the formula ##STR12## where X is a divalent saturated alkylene or alkylidene radical of the C 1 -C 10 series.
Claim 3
Dependent Claim
13 words
A UV-stable aromatic polycarbonate resin chain-stopped with a grouping having the formula ##STR13##
Claim 4
Dependent Claim
13 words
A UV-stable aromatic polycarbonate resin chain-stopped with a grouping having the formula ##STR13##
Claim 5
Dependent Claim
13 words
A UV-stable aromatic polycarbonate resin chain-stopped with a grouping having the formula ##STR14##
Claim 6
Dependent Claim
13 words
A UV-stable aromatic polycarbonate resin chain-stopped with a grouping having the formula ##STR14##
Claim 7
Dependent Claim
13 words
A UV-stable aromatic polycarbonate resin chain-stopped with a grouping having the formula ##STR15##
Claim 8
Dependent Claim
13 words
A UV-stable aromatic polycarbonate resin chain-stopped with a grouping having the formula ##STR15##
Claim 9
Dependent Claim
18 words
A UV-stable polycarbonate resin corresponding to the formula ##STR16## where p is a whole number greater than 1.
Claim 10
Dependent Claim
18 words
A UV-stable polycarbonate resin corresponding to the formula ##STR16## where p is a whole number greater than 1.
References Cited (Backward Citations)
US3157617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-06 | 1984-10-06 | 1985-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-06 | 1988-10-06 | 1989-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-06 | 1992-10-06 | 1993-04-07 | $7700.00 | Window Closed / Lapsed |