US3270778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible paper tube
Assignee: Individual
•
Filing: 1963-08-14
•
Granted: 1966-09-06
•
Expires: 1983-08-14
Abstract
No abstract record available.
Inventors
- 👤 William A Foll
- 👤 Albin M Hancik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:09
CPC Classifications
B; B31; B31C; B31C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A SPIRAL WOUND FLEXIBLE, BENDABLE PAPER TUBE CAPABLE OF ABSORBING OIL COMPRISING AN INNER PLY OF BIAXIALLY CREPED KRAFT PAPER, A COATING OF ADHESIVE ON THE EXTERIOR SURFACE OF SAID INNER PLY, AN INTERMEDIATE PLY OF BIAXIALLY CREPED KRAFT PAPER, AN EXTERIOR PLY OF BIAXIALLY CREPED KRAFT PAPER LAP SEAMED TO ITSELF, AND ADHESIVE SECURING TOGETHER THE LAPPED PORTIONS ONLY OF SAID EXTERIOR PLY.
Claim 2
Dependent Claim
64 words
A SPIRAL WOUND FLEXIBLE, BENDABLE PAPER TUBE CAPABLE OF ABSORBING OIL COMPRISING AN INNER PLY OF BIAXIALLY CREPED KRAFT PAPER, A COATING OF ADHESIVE ON THE EXTERIOR SURFACE OF SAID INNER PLY, AN INTERMEDIATE PLY OF BIAXIALLY CREPED KRAFT PAPER, AN EXTERIOR PLY OF BIAXIALLY CREPED KRAFT PAPER LAP SEAMED TO ITSELF, AND ADHESIVE SECURING TOGETHER THE LAPPED PORTIONS ONLY OF SAID EXTERIOR PLY.
References Cited (Backward Citations)
US1996066A
Cited
US2181035A
Cited
US2234353A
Cited
US2355584A
Cited
US2798510A
Cited
US2884957A
Cited
US2888043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |