Patent US3267173A successfully refreshed from Google Patents.
US3267173A
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Product and process for making a polyethylene-maleate diester graft copolymer
Assignee: Honeywell International Inc
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Filing: 1962-05-18
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Granted: 1966-08-16
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Expires: 1982-05-18
Abstract
No abstract record available.
Inventors
- 👤 Robert J Zeitlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:33
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08F; C08F255/00; C08F255/02; C08K3/01; C08K3/013
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A GRAFT COPOLYMER OF (A) A POLYETHYLENE POLYMER HAVING A DENSITY OF AT LEAST ABOUT 0.940 AND CONTAINING AT LEAST ABOUT 90% BY WEIGHT OF ETHYLENE IN THE POLYMER CHAIN AND (B) A MELEIC ACID DIESTER; THE MALEIC ACID DIESTER BEING PRESENT IN THE GRAFT COPOLYMER IN AMOUNTS OF FROM ABOUT 0.5 TO ABOUT 12% BY WEIGHT.
Claim 2
Dependent Claim
57 words
A GRAFT COPOLYMER OF (A) A POLYETHYLENE POLYMER HAVING A DENSITY OF AT LEAST ABOUT 0.940 AND CONTAINING AT LEAST ABOUT 90% BY WEIGHT OF ETHYLENE IN THE POLYMER CHAIN AND (B) A MELEIC ACID DIESTER; THE MALEIC ACID DIESTER BEING PRESENT IN THE GRAFT COPOLYMER IN AMOUNTS OF FROM ABOUT 0.5 TO ABOUT 12% BY WEIGHT.
References Cited (Backward Citations)
GB885969A
Cited
US3166607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |