Patent US3069305A successfully refreshed from Google Patents.
US3069305A
Expired / Lapsed
US
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Method of making novel fibrous products containing natural or artificial rubber as a bonding agent
Assignee: Carl Freudenberg KG
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Filing: 1959-11-16
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Granted: 1962-12-18
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Expires: 1979-11-16
Abstract
No abstract record available.
Inventors
- 👤 Fahrbach Erich
- 👤 Lauppe Wilhelm
- 👤 Schabert Robert
- 👤 Heling Wilhelm
- 👤 Nottebohm Carl-Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:03
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/64; B; B32; B32B; B32B27/00; D04H1/587
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A METHOD OF MAKING A MATERIAL OF HIGH SURFACE AND MARGINAL HARDNESS AND OF GOOD COMPRESSIBILITY COMPRISING
Claim 2
Independent Claim
17 words
A METHOD OF MAKING A MATERIAL OF HIGH SURFACE AND MARGINAL HARDNESS AND OF GOOD COMPRESSIBILITY COMPRISING
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) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |