US3219640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-resistant polymer compositions
Assignee: Dow Chemical Co
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Filing: 1962-09-05
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Granted: 1965-11-23
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Expires: 1982-09-05
Abstract
No abstract record available.
Inventors
- 👤 Lee Lieng Huang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:55
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A NONFLAMMABLE THERMOPLASTIC POLYMERIC COMPOSITION SUITABLE FOR THE PREPARATION OF SELF-SUPPORTING FILMS COMPRISING AN INTERPOLYMER OF (1) FROM ABOUT 25-50 WEIGHT PERCENT OF AT LEAST ONE HALOETHYL ESTER SELECTED FROM THE GROUP CONSISTING OF 2-BROMOETHYLARCYLATE AND 2BROMOETHYLMETHACRYLATE AND (2) COMPLEMENTARILY FROM ABOUT 75 AND 50 WEIGHT PERCENT OF A COMONOMER SELECTED FROM THE GROUP CONSISTING OF A POLYMERIZABLE ALKENYL AROMATIC COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
64 words
A NONFLAMMABLE THERMOPLASTIC POLYMERIC COMPOSITION SUITABLE FOR THE PREPARATION OF SELF-SUPPORTING FILMS COMPRISING AN INTERPOLYMER OF (1) FROM ABOUT 25-50 WEIGHT PERCENT OF AT LEAST ONE HALOETHYL ESTER SELECTED FROM THE GROUP CONSISTING OF 2-BROMOETHYLARCYLATE AND 2BROMOETHYLMETHACRYLATE AND (2) COMPLEMENTARILY FROM ABOUT 75 AND 50 WEIGHT PERCENT OF A COMONOMER SELECTED FROM THE GROUP CONSISTING OF A POLYMERIZABLE ALKENYL AROMATIC COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
US2492170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |