US3523149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making a deep-drawn composite of plastic film and non-woven fabric
Assignee: Carl Freudenberg KG
•
Filing: 1965-12-15
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Granted: 1970-08-04
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Expires: 1985-12-15
Abstract
No abstract record available.
Inventors
- 👤 Ludwig Hartmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:20
CPC Classifications
D; D04; D04H; D04H5/00; D04H5/08; D04H5/10; B; B29; B29C; B29C51/00; B29C51/14; B29C51/145; B32; B32B; B32B27/00; D04H3/00; D04H3/08; D04H3/16; D06; D06N; D06N3/00; D06N3/0002; D06N3/0015; D06N3/007; D06N3/0077; B29C2791/00; B29C2791/004; B29C2791/006; B29C51/10; Y; Y10; Y10S; Y10S428/00; Y10S428/904
Claims Analysis
Total Claims: 0
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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) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |