Patent US2800487A successfully refreshed from Google Patents.
US2800487A
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US
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Polyoxyalkylene substituted heterocyclic amines and their ammonium salt derivatives
Assignee: Universal Oil Products Co
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Filing: 1952-12-31
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Granted: 1957-07-23
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Expires: 1972-12-31
Abstract
No abstract record available.
Inventors
- 👤 Mark Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:07
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/30; C07D207/32; C07D207/325; C07D209/00; C07D209/02; C07D209/04; C07D209/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A COMPOUND HAVING AN ALKYL GROUP OF FROM 6 TO ABOUT 1K CARBON ATOMS ATTACHED TO ONE OF THE RINGS IN THE STRUCTURE
Claim 2
Dependent Claim
23 words
A COMPOUND HAVING AN ALKYL GROUP OF FROM 6 TO ABOUT 1K CARBON ATOMS ATTACHED TO ONE OF THE RINGS IN THE STRUCTURE
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) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |