US3850874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction element composition
Assignee: Occidental Chemical Corp
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Filing: 1972-12-20
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Granted: 1974-11-26
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Expires: 1992-12-20
Abstract
Abstract 1. A FRICTION ELEMENT COMPOSITION COMPRISING A FRICTION IMPARTING AGENT, AN INORGANIC FILLER AND A BINDER COMPOSITION COMPRISING A NON-HYDROXYALKYLATED HYDROXY AROMATIC HYDROCARBON ALDEHYDE RESOLE CONTAINING SUBSTANTIALLY NO ETHERIFIED AROMATIC HYDROXYL GROUPS AND AN HYDROXYALKYL HYDROXY AROMATIC HYDROCARBON ALDEHYDE RESOLE CONTAINING LESS THAN ABOUT 0.5 PERCENT OF THE AROMATIC HYDROXYL ORIGINALLY PRESENT IN THE HYDROXYL AROMATIC HYDROCARBON ALDEHYDE CONDENSATE.
Inventors
- 👤 F Bryzinsky
- 👤 F Grazen
- 👤 M Buike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:17
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/021; F16D69/022; C; C08; C08G; C08G8/00; C08G8/28; C08G8/36; C08L; C08L61/00; C08L61/04; C08L61/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A FRICTION ELEMENT COMPOSITION COMPRISING A FRICTION IMPARTING AGENT, AN INORGANIC FILLER AND A BINDER COMPOSITION COMPRISING A NON-HYDROXYALKYLATED HYDROXY AROMATIC HYDROCARBON ALDEHYDE RESOLE CONTAINING SUBSTANTIALLY NO ETHERIFIED AROMATIC HYDROXYL GROUPS AND AN HYDROXYALKYL HYDROXY AROMATIC HYDROCARBON ALDEHYDE RESOLE CONTAINING LESS THAN ABOUT 0.5 PERCENT OF THE AROMATIC HYDROXYL ORIGINALLY PRESENT IN THE HYDROXYL AROMATIC HYDROCARBON ALDEHYDE CONDENSATE.
Claim 2
Dependent Claim
58 words
A FRICTION ELEMENT COMPOSITION COMPRISING A FRICTION IMPARTING AGENT, AN INORGANIC FILLER AND A BINDER COMPOSITION COMPRISING A NON-HYDROXYALKYLATED HYDROXY AROMATIC HYDROCARBON ALDEHYDE RESOLE CONTAINING SUBSTANTIALLY NO ETHERIFIED AROMATIC HYDROXYL GROUPS AND AN HYDROXYALKYL HYDROXY AROMATIC HYDROCARBON ALDEHYDE RESOLE CONTAINING LESS THAN ABOUT 0.5 PERCENT OF THE AROMATIC HYDROXYL ORIGINALLY PRESENT IN THE HYDROXYL AROMATIC HYDROCARBON ALDEHYDE CONDENSATE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |