US2810728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beta-sulphonyl ketones
Assignee: Acordis UK Ltd
•
Filing: 1952-10-10
•
Granted: 1957-10-22
•
Expires: 1972-10-10
Abstract
No abstract record available.
Inventors
- 👤 Beesley Stanley
- 👤 John John Alec
- 👤 Drewitt James Gordon Napier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:58
CPC Classifications
C; C07; C07D; C07D333/00; C07D333/02; C07D333/46; C07D333/48; C08; C08K; C08K5/00; C08K5/36; C08K5/45
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A B-MONOSUBSTITUTION DERIVATIVE OF SULPHOLANE WHEREING THE SUBSTITUENT GROUP IS AN ALKYL-CARBONYL-METHYLENE GROUP CONTAINING 3 TO 6 CARBON ATOMS.
Claim 2
Dependent Claim
19 words
A B-MONOSUBSTITUTION DERIVATIVE OF SULPHOLANE WHEREING THE SUBSTITUENT GROUP IS AN ALKYL-CARBONYL-METHYLENE GROUP CONTAINING 3 TO 6 CARBON ATOMS.
References Cited (Backward Citations)
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US2373329A
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US2393925A
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US2394251A
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GB598309A
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US2471272A
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US2451299A
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US2504098A
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US2504099A
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US2461341A
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US2482631A
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US2502934A
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US2640834A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |