US3346527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal complex-forming compounds and process of making and using same
Assignee: Chemirad Corp
•
Filing: 1963-12-23
•
Granted: 1967-10-10
•
Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Lagally Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:00
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; C08G73/0233
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
THE WATER-SOLUBLE REACTION PRODUCT OF A POLYALKYLENE IMINE HAVING FROM 800 TO 3,000 POLYMERIC UNITS AND THE CYCLIC ESTER OF A POLYALCOHOL AND CARBONIC ACID HAVING, WITHIN THE POLYALKYLENE IMINE CHAIN, UNITS OF THE FORMULA:
Claim 2
Dependent Claim
35 words
THE WATER-SOLUBLE REACTION PRODUCT OF A POLYALKYLENE IMINE HAVING FROM 800 TO 3,000 POLYMERIC UNITS AND THE CYCLIC ESTER OF A POLYALCOHOL AND CARBONIC ACID HAVING, WITHIN THE POLYALKYLENE IMINE CHAIN, UNITS OF THE FORMULA:
References Cited (Backward Citations)
US2897162A
Cited
US2868724A
Cited
US2824857A
Cited
US2961367A
Cited
US3134740A
Cited
US3162618A
Cited
US3150081A
Cited
US3264368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |