US3239555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis-citric acid esters
Assignee: Joh A Benckiser GmbH
•
Filing: 1961-12-05
•
Granted: 1966-03-08
•
Expires: 1981-12-05
Abstract
No abstract record available.
Inventors
- 👤 Miksch Johannes
- 👤 Bauer Lieselotte
- 👤 Albert Adolf
- 👤 Zeiss Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:02
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/11; C07; C07C; C07C67/00; C07C67/14; C07C69/00; C07C69/66; C07C69/67; C07C69/675; C07C69/704; C07C69/76; C07C69/80; C07C69/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
BIS-CITRIC ACID ESTERS OF THE FORMULA:
Claim 2
Dependent Claim
6 words
BIS-CITRIC ACID ESTERS OF THE FORMULA:
References Cited (Backward Citations)
CA629235A
Cited
US2965598A
Cited
US2915551A
Cited
US2958669A
Cited
US2886590A
Cited
US3025271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |