US3370956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fumaric acid compositions
Assignee: Pfizer Inc
•
Filing: 1963-08-20
•
Granted: 1968-02-27
•
Expires: 1983-08-20
Abstract
No abstract record available.
Inventors
- 👤 Paul D Reitman
- 👤 Edgar K Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:34
CPC Classifications
A; A23; A23L; A23L2/00; A23L2/40; A23L2/52; A23L2/68; A23L27/00; A23L27/70; A23L27/72; A23P; A23P10/00; A23P10/30; C; C07; C07C; C07C57/00; C07C57/02; C07C57/13; C07C57/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
FURMURIC ACID CRYSTALS OF ENHANCED RATE OF WATERSOLUBILITY, CONSISTING ESSENTIALLY OF PARTICLES IN ACICULAR OR ROD-LIKE FORM HAVING A DIMENSION BELOW ABOUT 20 MICRONS AND SURROUNDED BY A DRIED DEPOSIT OF A WATER-SOLUBLE, EDIBLE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF HYDROXYCARBOXYLIC ACIDS OF ABOUT 2 TO 12 CARBON ATOMS AND THEIR METAL SALTS.
Claim 2
Dependent Claim
54 words
FURMURIC ACID CRYSTALS OF ENHANCED RATE OF WATERSOLUBILITY, CONSISTING ESSENTIALLY OF PARTICLES IN ACICULAR OR ROD-LIKE FORM HAVING A DIMENSION BELOW ABOUT 20 MICRONS AND SURROUNDED BY A DRIED DEPOSIT OF A WATER-SOLUBLE, EDIBLE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF HYDROXYCARBOXYLIC ACIDS OF ABOUT 2 TO 12 CARBON ATOMS AND THEIR METAL SALTS.
References Cited (Backward Citations)
US2399085A
Cited
GB765885A
Cited
US3009810A
Cited
US3011894A
Cited
US3016299A
Cited
US3089818A
Cited
US3151986A
Cited
US3169872A
Cited
US3245798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |