US2899467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface hydrated citric acid crystals
Assignee: —
•
Filing: —
•
Granted: 1959-08-11
•
Expires: 1976-08-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:20
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/235; C07C59/245; C07C59/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
SURFACE HYDRATED CRYSTALS OF FINELY-DIVIDED ANHYDROUS CITRIC ACIDS OF CONFECTIONARY GRADE HAVING A CRYSTAL SIZE OF U.S. STANDARD SIEVE FROM ABOUT 60 TO ABOUT 100 AND CONTAINING FROM ABOUT 3% TO 6% BY WEIGHT OF WATER OF HYDRATION, THE CORES OF SAID CRYSTALS BEING FREE OF WATER OF HYDRATION AND SAID CRYSTALS BEING BLENDABLE WITH MOLTEN CANDY TO PRODUCE A HOMOGENOUS SUBSTANTIALLY NON-TACKY PRODUCT.
Claim 2
Dependent Claim
64 words
SURFACE HYDRATED CRYSTALS OF FINELY-DIVIDED ANHYDROUS CITRIC ACIDS OF CONFECTIONARY GRADE HAVING A CRYSTAL SIZE OF U.S. STANDARD SIEVE FROM ABOUT 60 TO ABOUT 100 AND CONTAINING FROM ABOUT 3% TO 6% BY WEIGHT OF WATER OF HYDRATION, THE CORES OF SAID CRYSTALS BEING FREE OF WATER OF HYDRATION AND SAID CRYSTALS BEING BLENDABLE WITH MOLTEN CANDY TO PRODUCE A HOMOGENOUS SUBSTANTIALLY NON-TACKY PRODUCT.
References Cited (Backward Citations)
US1792657A
Cited
US1921634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |