US3227696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphorous and chlorine-containing copolymers as lubricant additives
Assignee: Shell USA Inc
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Filing: 1964-06-29
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Granted: 1966-01-04
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Dervin L Flowers
- 👤 Lyman E Lorensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:08
CPC Classifications
C; C08; C08F; C08F30/00; C08F30/02; C08F18/00; C08F18/02; C08F18/04; C10; C10M; C10M153/00; C10M153/02; C10M2203/00; C10M2203/10; C10M2203/1006; C10M2225/00; C10M2225/02; C10N; C10N2030/00; C10N2030/02; C10N2030/04; C10N2030/06; C10N2040/00; C10N2040/25
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
26 words
AN OIL-SOLUBLE COPOLYMER OF A BIS(W-CHLOROALKYL) VINYL PHOSPHONATE AND AT LEAST ONE VINYL ESTER OF A LONGCHAIN FATTY ACID HAVING FROM 8 TO 20 CARBON ATOMS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |