US2606910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diels-alder adducts of hexahalo-cyclopentadiene
Assignee: Velsicol Corp
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Filing: 1946-01-05
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Granted: 1952-08-12
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Expires: 1966-01-05
Abstract
No abstract record available.
Inventors
- 👤 Simon H Herzfeld
- 👤 Rex E Lidov
- 👤 Bluestone Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:24
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/02; C07; C07C; C07C23/00; C07C23/18; C07C23/20; C07C23/27; C07C23/30; C07C23/38; C08L; C08L69/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
THE PROCESS OF PREPARING THE DIELS-ALDER ADDUCT OF A HEXAHALOCYCLOPENTADIENE AND A DIENOPHILE POSSESSING A CARBON OF CARBON UNSATURATED BOND FROM THE GROUP CONSISTING OF MALEIC ANHYDRIDE, CYCLOPENTADIENE, BUTADIENE, STYRENE, INDENE, DICYCLOPENTADIENE, PHENYLACETYLENE, FULVENE AND ISOPRENE WHICH COMPRISES REACTING SAID MATERIALS AT A TEMPERATURE BELOW 200* C.
Claim 2
Dependent Claim
47 words
THE PROCESS OF PREPARING THE DIELS-ALDER ADDUCT OF A HEXAHALOCYCLOPENTADIENE AND A DIENOPHILE POSSESSING A CARBON OF CARBON UNSATURATED BOND FROM THE GROUP CONSISTING OF MALEIC ANHYDRIDE, CYCLOPENTADIENE, BUTADIENE, STYRENE, INDENE, DICYCLOPENTADIENE, PHENYLACETYLENE, FULVENE AND ISOPRENE WHICH COMPRISES REACTING SAID MATERIALS AT A TEMPERATURE BELOW 200* C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |