US3360512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formaldehyde derivatives of starch
Assignee: Standard Brands Inc
•
Filing: 1964-06-01
•
Granted: 1967-12-26
•
Expires: 1984-06-01
Abstract
No abstract record available.
Inventors
- 👤 Jerry W Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:54
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
IN THE PROCESS OF PREPARING FORMALDEHYDE DERIVATIVES OF STARCH BY REACTING FORMALDEHYDE AND STARCH, THE IMPROVEMENT WHICH COMPRISES REACTING SAID FORMALDEHYDE AND STARCH AT A TEMPERATURE BELOW THE GELATINIZATION TEMPERATURES OF THE STARCH IN AN AQUEROUS SLURRY HAVING A FILTRATE ACIDITY OF 9-11.
Claim 2
Dependent Claim
43 words
IN THE PROCESS OF PREPARING FORMALDEHYDE DERIVATIVES OF STARCH BY REACTING FORMALDEHYDE AND STARCH, THE IMPROVEMENT WHICH COMPRISES REACTING SAID FORMALDEHYDE AND STARCH AT A TEMPERATURE BELOW THE GELATINIZATION TEMPERATURES OF THE STARCH IN AN AQUEROUS SLURRY HAVING A FILTRATE ACIDITY OF 9-11.
References Cited (Backward Citations)
US2113034A
Cited
US3238193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |