US3349433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for granulating extruded polymers
Assignee: Oerlikon Barmag AG
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Filing: 1965-11-15
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Granted: 1967-10-31
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Expires: 1985-11-15
Abstract
No abstract record available.
Inventors
- 👤 Schippers Heinz
- 👤 Niemeyer Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:07
CPC Classifications
B; B29; B29B; B29B9/00; B29B9/02; B29B9/06; B29B9/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN A DEVICE FOR THE GRANULATION OF AN EXTRUDED THERMOPLASTIC MATERIAL BY MEANS OF AT LEAST ONE ROTATING KNIFE BLADE MOVING OVER THE SURFACE OF A DIE FACE FROM WHICH A POLYMER STRAND IS EXTRUDED, WHEREIN SAID DIE FACE IS IN AT LEAST PARTIAL WEARING CONTACT WITH SAID KNIFE BLADE, THE IMPROVEMENT OF SAID EXTRUDER DIE HAVING AT LEAST THE FACE PORTION THEREOF COMPOSED OF NODULAR CAST IRON.
Claim 2
Dependent Claim
68 words
IN A DEVICE FOR THE GRANULATION OF AN EXTRUDED THERMOPLASTIC MATERIAL BY MEANS OF AT LEAST ONE ROTATING KNIFE BLADE MOVING OVER THE SURFACE OF A DIE FACE FROM WHICH A POLYMER STRAND IS EXTRUDED, WHEREIN SAID DIE FACE IS IN AT LEAST PARTIAL WEARING CONTACT WITH SAID KNIFE BLADE, THE IMPROVEMENT OF SAID EXTRUDER DIE HAVING AT LEAST THE FACE PORTION THEREOF COMPOSED OF NODULAR CAST IRON.
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) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |