US3439075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for insulating pipes
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1966-05-23
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Granted: 1969-04-15
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Expires: 1986-05-23
Abstract
No abstract record available.
Inventors
- 👤 Richard H Bauer
- 👤 Richard Kilpert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:34
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/04; B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/38; B29C44/385; B29C44/386
Claims Analysis
Total Claims: 0
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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) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |