US2904529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkenyl-substituted 2-hydroxybenzophenone stabilizers
Assignee: Dow Chemical Co
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Filing: 1956-11-07
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Granted: 1959-09-15
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Expires: 1976-11-07
Abstract
No abstract record available.
Inventors
- 👤 David A Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:03
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
A LIGHT STABLE THERMOPLASTIC COMPOSITION COMPRISNG A HALOETHYLENE POLYMER AND FROM 1 TO 10 PERCENT OF THE WEIGHT OF SAID POLYMER OF A HYDROXYBENZOPHENONE DERIVATIVE HAVING THE GENERAL FORMUL:
Claim 2
Dependent Claim
29 words
A LIGHT STABLE THERMOPLASTIC COMPOSITION COMPRISNG A HALOETHYLENE POLYMER AND FROM 1 TO 10 PERCENT OF THE WEIGHT OF SAID POLYMER OF A HYDROXYBENZOPHENONE DERIVATIVE HAVING THE GENERAL FORMUL:
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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |