Patent US3035098A successfully refreshed from Google Patents.
US3035098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for chlorinating alkylidenebisphenols
Assignee: Dow Chemical Co
•
Filing: 1959-03-12
•
Granted: 1962-05-15
•
Expires: 1979-03-12
Abstract
No abstract record available.
Inventors
- 👤 Bryner Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:32
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A METHOD FOR THE PREPARATION OF BIS(DICHLOROPHENOLS) WHICH COMPRISES REACTING BY CONTACTING A BISPHENOLS SELECTED FROM THE GROUP HAVING ONE OF THE FORMULAS
Claim 2
Independent Claim
23 words
A METHOD FOR THE PREPARATION OF BIS(DICHLOROPHENOLS) WHICH COMPRISES REACTING BY CONTACTING A BISPHENOLS SELECTED FROM THE GROUP HAVING ONE OF THE FORMULAS
References Cited (Backward Citations)
US2254904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |