Patent US5169499B1 successfully refreshed from Google Patents.
US5169499B1
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US
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Paper machine felts of a copolymer of 1,4-dimethylocyclohexane, terephthalic acid, and isophthalic acid
Assignee: Albany International Corp
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Filing: 1991-04-04
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Granted: 1994-05-10
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Expires: 2011-04-04
Abstract
Abstract This invention relates to a method of manufacturing an article of paper machine clothing suitable for use in the forming, pressing or drying section of a papermaking machine, the method comprising producing fibres having a melting point greater than 260 DEG C from a polyester material having a hindered carboxyl group, and forming the fibres into a fibre structure. The paper machine clothing in accordance with the invention may be used in all sections of the paper making machine and is characterised by much improved hydrolysis resistance.
Inventors
- 👤 Dana B Eagles
- 👤 Jeanne A Leon
- 👤 Francis Ditaranto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:22
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/0027; D01; D01F; D01F6/00; D01F6/58; D01F6/62; Y; Y10; Y10S; Y10S162/00; Y10S162/90; Y10S162/902; Y10S162/903; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24636; Y10T442/00; Y10T442/30; Y10T442/3065; Y10T442/3089; Y10T442/3114
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-05-09 | 1997-11-08 | 1998-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-09 | 2001-11-08 | 2002-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-09 | 2005-11-08 | 2006-05-10 | $7700.00 | Window Closed / Lapsed |