US3799893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methylene phosphonates of glycidyl reacted polyamines
Assignee: Baker Petrolite LLC
•
Filing: 1971-03-31
•
Granted: 1974-03-26
•
Expires: 1991-03-31
Abstract
Abstract METHYLENE PHOSPHONATES OF GLYCIDYL REACTED POLYALKYLENE POLYAMINES AND TO USES THEREFOR, PARTICULARLY AS SCALE INHIBITORS, CHELATING AGENTS, ETC.
Inventors
- 👤 P Quinlan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:39
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/36; C11D3/364; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/14; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3808; Y; Y10; Y10S; Y10S507/00; Y10S507/927; Y10T; Y10T29/00; Y10T29/45
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |