Patent US3557181A successfully refreshed from Google Patents.
US3557181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oily polymer having polyether chain and nitroalkyl groups
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1961-12-11
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Granted: 1971-01-19
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Expires: 1981-12-11
Abstract
Abstract 1. THE CROSSLINKED VISCOUS OILY POLYMER OF 3-NITROPROPENE OXIDE CONTAINING THE RECURRING UNIT: -CH(-CH2-NO2)-CH2-O- WITH TERMINAL HYDROXYL GROUPS.
Inventors
- 👤 Julian Lakritz
- 👤 William E Tyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:10
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B45/105; C07; C07D; C07D303/00; C07D303/02; C07D303/08; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
THE CROSSLINKED VISCOUS OILY POLYMER OF 3-NITROPROPENE OXIDE CONTAINING THE RECURRING UNIT:
Claim 2
Dependent Claim
12 words
THE CROSSLINKED VISCOUS OILY POLYMER OF 3-NITROPROPENE OXIDE CONTAINING THE RECURRING UNIT:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |