Patent US2528445A successfully refreshed from Google Patents.
US2528445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Divinyl tetrachlorobenzenes and polymers thereof
Assignee: Sprague Electric Co
•
Filing: 1948-08-17
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Granted: 1950-10-31
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Expires: 1968-08-17
Abstract
No abstract record available.
Inventors
- 👤 Markarian Moushy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:05
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/10; C07C17/14; C07C17/12; C07C17/25; C07C25/00; C07C25/24; C08; C08F; C08F12/00; C08F12/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
3 words
A DIVINYL TETRACHLOROBENZENE.
Claim 2
Dependent Claim
3 words
A DIVINYL TETRACHLOROBENZENE.
References Cited (Backward Citations)
US2110829A
Cited
US2265312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |