US2865882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomeric compositions having silicacontaining reinforcing pigment
Assignee: Goodrich Corp
•
Filing: 1955-12-22
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Granted: 1958-12-23
•
Expires: 1975-12-22
Abstract
No abstract record available.
Inventors
- 👤 Roger W Strassburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:09
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/025; C08; C08K; C08K9/00; C08K9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A LIGHT COLORED TO WHITE, PARTICULATE, SOLID, AMORPHOUS SILICA CONTAINNG A MINOR AMOUNT BY WEIGHT OF NITROGEN AND OBTAINED BY TREATING A LIGHT COLORED TO WHITE, PARTICULATE, SOLID MATERIAL COMPRISING AMORPHOUS SILICA CONTAINING HALOGEN IN AN AMOUNT NOT IN EXCESS OF ABOUT 3% BY WEIGHT WITH A NITROGEN COMPOUND HAVING ACTIVE HYDROGEN AND IN AN AMOUNT AND AT A TEMPERATURE SUFFICIENT TO REPLACE ESSENTIALLY ALL OF THE HALOGEN OF SAID SILICA WITH A RESIDUE OF SAID COMPOUND ATTACHED TO SAID SILICA THROUGH NITROGEN AND WITHOUT CAUSING SINTERING OF SAID SILICA.
Claim 2
Dependent Claim
90 words
A LIGHT COLORED TO WHITE, PARTICULATE, SOLID, AMORPHOUS SILICA CONTAINNG A MINOR AMOUNT BY WEIGHT OF NITROGEN AND OBTAINED BY TREATING A LIGHT COLORED TO WHITE, PARTICULATE, SOLID MATERIAL COMPRISING AMORPHOUS SILICA CONTAINING HALOGEN IN AN AMOUNT NOT IN EXCESS OF ABOUT 3% BY WEIGHT WITH A NITROGEN COMPOUND HAVING ACTIVE HYDROGEN AND IN AN AMOUNT AND AT A TEMPERATURE SUFFICIENT TO REPLACE ESSENTIALLY ALL OF THE HALOGEN OF SAID SILICA WITH A RESIDUE OF SAID COMPOUND ATTACHED TO SAID SILICA THROUGH NITROGEN AND WITHOUT CAUSING SINTERING OF SAID SILICA.
References Cited (Backward Citations)
US2093106A
Cited
US2535036A
Cited
US2560043A
Cited
US2578605A
Cited
US2663650A
Cited
US2739904A
Cited
US2692871A
Cited
US2757098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |