US3489067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for improving the bending quality of water resistant corrugated paperboard
Assignee: Union Oil Company of California
•
Filing: 1966-03-09
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Granted: 1970-01-13
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Expires: 1986-03-09
Abstract
No abstract record available.
Inventors
- 👤 Thomas Hallis Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:27
CPC Classifications
B; B31; B31B; B31B50/00; B31B2100/00; B31B2100/002; B31B2100/0022; B31B50/74; B31B50/742; B31B50/75
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |