Patent US516705A successfully refreshed from Google Patents.
US2829158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroperoxides of alkaryl sulfonic acids and salts thereof
Assignee: Hercules Powder Co
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Filing: 1956-02-20
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Granted: 1958-04-01
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Expires: 1976-02-20
Abstract
No abstract record available.
Inventors
- 👤 Winfred E Weldy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:41
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
AS A NEW COMPOSITION OF MATTER A HYDROPEROXIDE OF A METERIAL OF THE GROUP CONSISTING OF ORGANIC SULFONIC ACIDS AND THE SLATS THEREOF OF THE GENERAL FORMULA:
Claim 2
Dependent Claim
27 words
AS A NEW COMPOSITION OF MATTER A HYDROPEROXIDE OF A METERIAL OF THE GROUP CONSISTING OF ORGANIC SULFONIC ACIDS AND THE SLATS THEREOF OF THE GENERAL FORMULA:
References Cited (Backward Citations)
US2687438A
Cited
US2524084A
Cited
US2719864A
Cited
US2718530A
Cited
US2799715A
Cited
US2799695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |