US2669555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Homopolymers of alkyl n-substituted maleimides
Assignee: ExxonMobil Oil Corp
•
Filing: 1949-09-29
•
Granted: 1954-02-16
•
Expires: 1969-09-29
Abstract
No abstract record available.
Inventors
- 👤 John J Giammaria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:08
CPC Classifications
C; C08; C08F; C08F22/00; C08F22/36; C10; C10M; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/06; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
AS A NEW COMPOSITION OF MATTER, A HOMOPOLYMER OF AN N-ALKYL MALEIMIDE SELECTED FROM THE GROUP CONSISTING OF A HOMOPOLYMER OF NTETRADECYL MALEIMIDE AND A HOMOPOLYMER OF NHEXADECYL MALEIMIDE.
Claim 2
Dependent Claim
29 words
AS A NEW COMPOSITION OF MATTER, A HOMOPOLYMER OF AN N-ALKYL MALEIMIDE SELECTED FROM THE GROUP CONSISTING OF A HOMOPOLYMER OF NTETRADECYL MALEIMIDE AND A HOMOPOLYMER OF NHEXADECYL MALEIMIDE.
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) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |