US3255488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide slotted nozzle for producing film from extrudable materials
Assignee: Individual
•
Filing: 1964-03-25
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Granted: 1966-06-14
•
Expires: 1984-03-25
Abstract
No abstract record available.
Inventors
- 👤 Waldherr Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:10
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/305; B29C48/31; B29C48/313; B29C48/03; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A WIDE-SLOTTED NOZZLE FOR MAKING FILM FROM EXTRUDABLE MATERIALS, COMPRISING A NOZZLE BODY HAVING A CHANNEL OF ANNULAR CROSS-SECTION, A FLAT SPREADER SLOT AND A CHANNEL OF RECTILINEAR CROSS-SECTION CONNECTING SAID ANNULAR CROSS-SECTION CHANNEL AND SAID FLAT SPREADER SLOT, THE LENGTH OF THE CHANNEL''S PATH BEING MAINTAINED UNIFORMLY IN ALL THE ADJACENT ZONES EXTENDING IN THE DIRECTION OF THE FILM''S FLOW.
Claim 2
Dependent Claim
61 words
A WIDE-SLOTTED NOZZLE FOR MAKING FILM FROM EXTRUDABLE MATERIALS, COMPRISING A NOZZLE BODY HAVING A CHANNEL OF ANNULAR CROSS-SECTION, A FLAT SPREADER SLOT AND A CHANNEL OF RECTILINEAR CROSS-SECTION CONNECTING SAID ANNULAR CROSS-SECTION CHANNEL AND SAID FLAT SPREADER SLOT, THE LENGTH OF THE CHANNEL''S PATH BEING MAINTAINED UNIFORMLY IN ALL THE ADJACENT ZONES EXTENDING IN THE DIRECTION OF THE FILM''S FLOW.
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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |