US2911378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water insoluble phosphonic acid polymerizates of polyvinylaryl compounds
Assignee: ChampionX LLC
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Filing: 1952-01-02
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Granted: 1959-11-03
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Expires: 1972-01-02
Abstract
No abstract record available.
Inventors
- 👤 Jacob I Bregman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:33
CPC Classifications
B; B01; B01J; B01J39/00; B01J39/08; B01J39/12; C; C08; C08F; C08F8/00; C08F8/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A WATER INSOLUBLE PHOSPHONATED POLYMERIZATE OF A MIXTURE COMPRISING A POLYVINYLARYL HYDROCARBON COMPOUND AND A MONOVINYLARYL HYDROCARBON COMPOUND
Claim 2
Dependent Claim
18 words
A WATER INSOLUBLE PHOSPHONATED POLYMERIZATE OF A MIXTURE COMPRISING A POLYVINYLARYL HYDROCARBON COMPOUND AND A MONOVINYLARYL HYDROCARBON COMPOUND
References Cited (Backward Citations)
US2416060A
Cited
US2500149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |