Patent US3394913A successfully refreshed from Google Patents.
US3394913A
Expired / Lapsed
US
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Insulating riser sleeve composition
Assignee: Johns Manville Corp
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Filing: 1965-10-23
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Granted: 1968-07-30
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Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Mark E Binkley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:55
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/10; B; B22; B22D; B22D7/00; B22D7/06; B22D7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2156980A
Cited
US3072981A
Cited
US3230056A
Cited
GB998699A
Cited
US3262165A
Cited
US3212749A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |