Patent US3018258A successfully refreshed from Google Patents.
US3018258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New curing agents for polyepoxides and method for their preparation
Assignee: Shell USA Inc
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Filing: 1959-01-19
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Granted: 1962-01-23
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Expires: 1979-01-19
Abstract
No abstract record available.
Inventors
- 👤 Dale J Meier
- 👤 Kahn Allan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:25
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/188; C08F; C08F279/00; C08F279/02; C08F279/06; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L33/12; C08L51/00; C08L51/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
11 words
A NEW CURING AGENT FOR LIQUID POLYEPOXIDES PROCESSING A PLURALITY OF
Claim 2
Dependent Claim
11 words
A NEW CURING AGENT FOR LIQUID POLYEPOXIDES PROCESSING A PLURALITY OF
Claim 3
Dependent Claim
10 words
A PROCESS FOR CURING LIQUID POLYEPOXIDES POSSESING A PLURALITY OF
Claim 4
Dependent Claim
10 words
A PROCESS FOR CURING LIQUID POLYEPOXIDES POSSESING A PLURALITY OF
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) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |