US2802805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped constructional members for industrial use
Assignee: Hoechst AG
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Filing: 1952-08-21
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Granted: 1957-08-13
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Expires: 1972-08-21
Abstract
No abstract record available.
Inventors
- 👤 Dietz Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:43
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/05; B; B23; B23K; B23K35/00; B23K35/02; B23K35/0255; B23K35/0288; C08L; C08L61/00; C08L61/04; C08L61/06; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08L27/00; C08L27/02; C08L27/04; C08L27/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PROCESS OF MANUFACTURING SHAPED CONSTRUCTIONAL MEMBERS FOR INDUSTRIAL USE WHICH PROCESS COMPRISES MOLDING IN A HOT PRESS A MIXTURE CONSISTING ESSENTIALLY OF XYLENOL-FORMALDEHYDE RESIN, 1 TO 3 TIMES AS MUCH OF A MINERAL FILLER AS XYLENOL-FORMALDEHYDE RESIN AT LEAST ONE POLYMERIZED THERMOPLASTIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND POLYSTYRENE, THE RATIO OF XYLENOL RESIN:POLYMERIZED COMPOUND RANGING FROM ABOUT 4:1 TO ABOUT 10:1, AND FROM ABOUT 5% TO 15% OF ALL AT LEAST ONE COMPOUND SELECT FROM THE GROUP CONSISTING OF EPICHLORHYDRIN, GLYCOLCHLORHYDRIN, MONOCHLOROPROPANOL, DICHLOROPROPANOL, CHLORAL HYDRATE AND CHLOROBENZALDEHYDE.
Claim 2
Dependent Claim
93 words
A PROCESS OF MANUFACTURING SHAPED CONSTRUCTIONAL MEMBERS FOR INDUSTRIAL USE WHICH PROCESS COMPRISES MOLDING IN A HOT PRESS A MIXTURE CONSISTING ESSENTIALLY OF XYLENOL-FORMALDEHYDE RESIN, 1 TO 3 TIMES AS MUCH OF A MINERAL FILLER AS XYLENOL-FORMALDEHYDE RESIN AT LEAST ONE POLYMERIZED THERMOPLASTIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND POLYSTYRENE, THE RATIO OF XYLENOL RESIN:POLYMERIZED COMPOUND RANGING FROM ABOUT 4:1 TO ABOUT 10:1, AND FROM ABOUT 5% TO 15% OF ALL AT LEAST ONE COMPOUND SELECT FROM THE GROUP CONSISTING OF EPICHLORHYDRIN, GLYCOLCHLORHYDRIN, MONOCHLOROPROPANOL, DICHLOROPROPANOL, CHLORAL HYDRATE AND CHLOROBENZALDEHYDE.
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) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |