Patent US3694473A successfully refreshed from Google Patents.
US3694473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Higher alkano yl-propanediol-(1,3)-2 -trimethylammonium-ethyl phosphates
Assignee: HANSJORG E EIBL
•
Filing: 1971-07-02
•
Granted: 1972-09-26
•
Expires: 1991-07-02
Abstract
Abstract WHEREIN N IS AN INTEGER FROM 16 TO 25, INCLUSIVE; THE COMPOUNDS ARE USEFUL AS IMMUNOLOGIC ADJUVANTS. Compounds of the formula
Inventors
- 👤 Hansjorg E Eibl
- 👤 Otto Westphal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:56
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
10 words
A compound according to claim 1, which is stearoyl-propanediol-(1,3)-2''-trimethylammonium-ethyl phosphate.
Claim 2
Dependent Claim
10 words
A compound according to claim 1, which is arachidoyl-propanediol-(1,3)-2''-trimethylammonium-ethyl phosphate.
Claim 3
Dependent Claim
10 words
A compound according to claim 1, which is behenoyl-propanediol-(1,3)-2''-trimethylammonium-ethyl phosphate.
Claim 4
Dependent Claim
10 words
A compound according to claim 1, which is cerotoyl-propanediol-(1,3)-2''-trimethylammonium-ethyl phosphate.
References Cited (Backward Citations)
US3542820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |