US2532281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrophosphate baking powder
Assignee: Standard Brands Inc
•
Filing: 1947-10-15
•
Granted: 1950-12-05
•
Expires: 1967-10-15
Abstract
No abstract record available.
Inventors
- 👤 William E Barch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:57
CPC Classifications
A; A21; A21D; A21D2/00; A21D2/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A PYROPHOSPHATE BAKING POWDER HAVING IMPROVED KEEPING QUALITIES WHEREIN THE FILLER COMPRISES CALCIUM CARBONATE IN AN AMOUNT BETWEEN ABOUT 7% AND ABOUT 75% OF THE TOTAL WEIGHT OF THE FILLER.
Claim 2
Dependent Claim
30 words
A PYROPHOSPHATE BAKING POWDER HAVING IMPROVED KEEPING QUALITIES WHEREIN THE FILLER COMPRISES CALCIUM CARBONATE IN AN AMOUNT BETWEEN ABOUT 7% AND ABOUT 75% OF THE TOTAL WEIGHT OF THE FILLER.
References Cited (Backward Citations)
GB189620891A
Cited
US1538910A
Cited
US2062064A
Cited
US2160701A
Cited
GB550539A
Cited
GB552811A
Cited
US2394791A
Cited
US2408258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |