US3173903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of ethylene and propylene
Assignee: Hercules Powder Co
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Filing: 1960-08-25
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Granted: 1965-03-16
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Expires: 1980-08-25
Abstract
No abstract record available.
Inventors
- 👤 Carl A Lukach
- 👤 Setha G Olson
- 👤 Harold M Spurlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:45
CPC Classifications
C; C08; C08F; C08F210/00; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0807; C08L23/0815; C08L2205/00; C08L2205/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A SOLID COPOLYMER OF ETHYLENE AND PROPYLENE HAVING A PROPYLENE CONTENT OF FROM ABOUT 7 MOLE PERCENT TO ABOUT 20 MOLE PERCENT, WHREIN AT LEAST 90% OF THE TOTAL COPOLYMER HAS A PROPYLENE CONTENT WITHIN 5 PERCENTAGE UNITS OF THE AVERAGE COMPOSITION.
Claim 2
Dependent Claim
42 words
A SOLID COPOLYMER OF ETHYLENE AND PROPYLENE HAVING A PROPYLENE CONTENT OF FROM ABOUT 7 MOLE PERCENT TO ABOUT 20 MOLE PERCENT, WHREIN AT LEAST 90% OF THE TOTAL COPOLYMER HAS A PROPYLENE CONTENT WITHIN 5 PERCENTAGE UNITS OF THE AVERAGE COMPOSITION.
References Cited (Backward Citations)
BE553655A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |