US2976324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bisphenol sulfide
Assignee: Dow Chemical Co
•
Filing: 1958-11-17
•
Granted: 1961-03-21
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Expires: 1978-11-17
Abstract
No abstract record available.
Inventors
- 👤 Long Samuel Wendell
- 👤 Rodney D Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:31
CPC Classifications
C; C07; C07C; C07C323/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
38 words
THE PROCESS OF PREPARING BISPHENOL SULFIDES WHICH INCLUDES CONTACTING, AT A TEMPERATURE OF FROM ABOUT 0* C. TO ABOUT 110* C. AND A PRESSURE OF ABOUT ATMOSPHERIC PRESSURE, 6-CHLOR-O-CRESOL WITH BIS (CHLOROMETHYL) SULFIDE, AND SEPARATING THE A4,A4''-THIOBIS(6-CHLORO-2,4XYLENOL) PRODUCT.
Claim 2
Dependent Claim
38 words
THE PROCESS OF PREPARING BISPHENOL SULFIDES WHICH INCLUDES CONTACTING, AT A TEMPERATURE OF FROM ABOUT 0* C. TO ABOUT 110* C. AND A PRESSURE OF ABOUT ATMOSPHERIC PRESSURE, 6-CHLOR-O-CRESOL WITH BIS (CHLOROMETHYL) SULFIDE, AND SEPARATING THE A4,A4''-THIOBIS(6-CHLORO-2,4XYLENOL) PRODUCT.
Claim 3
Dependent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 4
Dependent Claim
5 words
A COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
US2417118A
Cited
US2488134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |