Patent US2546018A successfully refreshed from Google Patents.
US2546018A
Expired / Lapsed
US
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Production of glutaraldehyde and csubstituted glutaraldehyde from dihydro pyrans
Assignee: Shell Development Co
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Filing: 1947-09-06
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Granted: 1951-03-20
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Expires: 1967-09-06
Abstract
No abstract record available.
Inventors
- 👤 Curtis W Smith
- 👤 Seaver A Ballard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:50
CPC Classifications
C; C07; C07C; C07C47/00; C07C47/20; C07C47/228; C07C45/00; C07C45/56; C07C45/57; C07C45/60; C07C47/02; C07C47/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
17 words
THE METHOD OF PREPARING AN AQUEOUS SOLUTION OF GLUTARALDEHYDE WHICH COMPRISES DISSOLVING 2-(4-DIHYDRO-1,2-PYRANYL) METHYL ETHER IN WATER.
References Cited (Backward Citations)
FR763286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |