Patent US2999832A successfully refreshed from Google Patents.
US2999832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing dyed, hardened, resinous products of condensates
Assignee: Cavity GmbH
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Filing: 1957-03-05
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Granted: 1961-09-12
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Expires: 1977-03-05
Abstract
No abstract record available.
Inventors
- 👤 Faerber Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:28
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/205; C08J3/21; C08J3/215; C08G; C08G59/00; C08G59/18; C08J2363/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A METHOD OF DYEING AND HARDENING A HARDENABLE EPOXY GROUPS-CONTAINING RESINOUS CONDENSATE OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF EPICHLOROHYDRIN AND DICHLOROHYDRIN WITH AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF A POLYHYDRIC ALCOHOL AND A POLYHYDRIC PHENOL, WHICH METHOD CONSISTS ESSENTIALLY OF MIXING THE CONDENSATE WITH A DYESTUFF SELECTED FROM THE GROUP CONSISTING OF TRIARYLMETHANE DYES, THIAZINE DYES, AZINE DYES AND INDAMINE DYES, SAID DYESTUFF CONTAINING NITROGEN SELECTED FROM THE GROUP CONSISTING OF PRIMARY, SECONDARY AND TERTIARY NITROGEN ATOMS, AND HEATING THE RESULTING MIXTURE TO A TEMPERATURE AT WHICH THE MIXTURE IS HARDENED, WHEREBY SAID MIXTURE IS SIMULTANEOUSLY DYED AND HARDENED.
Claim 2
Independent Claim
106 words
A METHOD OF DYEING AND HARDENING A HARDENABLE EPOXY GROUPS-CONTAINING RESINOUS CONDENSATE OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF EPICHLOROHYDRIN AND DICHLOROHYDRIN WITH AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF A POLYHYDRIC ALCOHOL AND A POLYHYDRIC PHENOL, WHICH METHOD CONSISTS ESSENTIALLY OF MIXING THE CONDENSATE WITH A DYESTUFF SELECTED FROM THE GROUP CONSISTING OF TRIARYLMETHANE DYES, THIAZINE DYES, AZINE DYES AND INDAMINE DYES, SAID DYESTUFF CONTAINING NITROGEN SELECTED FROM THE GROUP CONSISTING OF PRIMARY, SECONDARY AND TERTIARY NITROGEN ATOMS, AND HEATING THE RESULTING MIXTURE TO A TEMPERATURE AT WHICH THE MIXTURE IS HARDENED, WHEREBY SAID MIXTURE IS SIMULTANEOUSLY DYED AND HARDENED.
References Cited (Backward Citations)
US2444333A
Cited
US2717885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |