US3334072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating agents, their preparation and their use
Assignee: Nopco Chemical Co
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Filing: 1964-01-08
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Granted: 1967-08-01
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Expires: 1984-01-08
Abstract
No abstract record available.
Inventors
- 👤 Sellet Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:53
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/52; C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/56; C08F22/00; C08F8/00; C08F8/12; C08F8/44; C08G; C08G12/00; C08G12/02; C08G12/46; C08G73/00; C08L; C08L35/00; C08L61/00; C08L61/20; C14; C14C; C14C11/00; C14C11/003; C14C3/00; C14C3/02; C14C3/08; C14C3/22; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; C08F2800/00; C08F2800/10; Y; Y10; Y10S; Y10S525/00; Y10S525/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
AN ANONIC POLYMER WHICH IS THE POLYMERIZATION PRODUCT OF FROM ABOUT ONE TO THREE MOLES OF ACRYLAMIDE AND ONE MOLE OF A COMONOMER SELECTRED FROM THE GROUP CONSISTING OF ITACONIC ACID AND THE ALKALI METTAL AND AMMONIUM SALTS OF ITACONIC ACID PRREPARED BY (A) INTRODUCING A POLYMERIZATION CATALYST TO AN AQUEOUS SOLUTION OF SAID ACRYLAMIDE AND SAID COMONOMER, AND (B) POLYMARIZING BY HEATING SAID SOLUTION AT A TEMPERATURE OF FROM ABOUT 70* C. TO ABOUT 108* C.
Claim 2
Dependent Claim
77 words
AN ANONIC POLYMER WHICH IS THE POLYMERIZATION PRODUCT OF FROM ABOUT ONE TO THREE MOLES OF ACRYLAMIDE AND ONE MOLE OF A COMONOMER SELECTRED FROM THE GROUP CONSISTING OF ITACONIC ACID AND THE ALKALI METTAL AND AMMONIUM SALTS OF ITACONIC ACID PRREPARED BY (A) INTRODUCING A POLYMERIZATION CATALYST TO AN AQUEOUS SOLUTION OF SAID ACRYLAMIDE AND SAID COMONOMER, AND (B) POLYMARIZING BY HEATING SAID SOLUTION AT A TEMPERATURE OF FROM ABOUT 70* C. TO ABOUT 108* C.
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |