Patent US2532044A successfully refreshed from Google Patents.
US2532044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of new cefcorine-
Assignee: —
•
Filing: —
•
Granted: 1950-11-28
•
Expires: 1967-11-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:41
CPC Classifications
C; C07; C07C; C07C41/00; C07C41/48; C07C41/50; C07C41/56; C07C43/00; C07C43/30; C07C43/313
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
THE PROCESS OF PRODUCING DELTA-CHLOROBUTYL FORMAL AND DELTA-CHLOROBUTYL CHLOROMETHYL ETHER WHICH COMPRISES BRINGING TOGETHER TETRAHYDROFURAN, FORMALDEYDE AND HYDROGEN CHLORIDE.
Claim 2
Dependent Claim
19 words
THE PROCESS OF PRODUCING DELTA-CHLOROBUTYL FORMAL AND DELTA-CHLOROBUTYL CHLOROMETHYL ETHER WHICH COMPRISES BRINGING TOGETHER TETRAHYDROFURAN, FORMALDEYDE AND HYDROGEN CHLORIDE.
References Cited (Backward Citations)
GB551182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |