US2875210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical compositions
Assignee: ChampionX LLC
•
Filing: 1956-05-17
•
Granted: 1959-02-24
•
Expires: 1976-05-17
Abstract
No abstract record available.
Inventors
- 👤 Carol H Bollenback
- 👤 Carl E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:57
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/04; C07D233/06; C07D233/08; C07D233/12; C07D233/14; Y; Y10; Y10S; Y10S507/00; Y10S507/939; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A COMPOSITION HAVING THE FOLLOWING STRUCTURAL FORMULA
Claim 2
Dependent Claim
7 words
A COMPOSITION HAVING THE FOLLOWING STRUCTURAL FORMULA
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) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |