US3389200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing compressed vermicular graphite structures
Assignee: Dow Chemical Co
•
Filing: 1966-03-30
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Granted: 1968-06-18
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Expires: 1986-03-30
Abstract
No abstract record available.
Inventors
- 👤 Olstowski Franciszek
- 👤 Sr John D Watson
- 👤 Osborn Oliver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:54
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/536; C25; C25B; C25B11/00; C25B11/04; C25B11/042; C25B11/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PROCESS FOR PRODUCING COMPRESSED VERMICULAR GRAPHITE STRUCTURES SUITABLE FOR ELECTRODES IN ELECTROYLSIS OF AQUEOUS SOLUTIONS WHICH COMPRISES (A) COMPRESSING VERMICULAR GRAPHITE ALONG ONE AXIS TO A DENSITY OF ABOUT 0.2 GM./CC. TO ABOUT 1.0 GM./ CC. TO FORM A COMPACT, AND (B) COMPRESSING SAID COMPACT ALONG AN AXIS PERPEDICULAR TO THE ORGINAL COMPRESSION AXIS TO A DENSITY OF AT LEAST 1.4 GM./CC.
Claim 2
Dependent Claim
63 words
A PROCESS FOR PRODUCING COMPRESSED VERMICULAR GRAPHITE STRUCTURES SUITABLE FOR ELECTRODES IN ELECTROYLSIS OF AQUEOUS SOLUTIONS WHICH COMPRISES (A) COMPRESSING VERMICULAR GRAPHITE ALONG ONE AXIS TO A DENSITY OF ABOUT 0.2 GM./CC. TO ABOUT 1.0 GM./ CC. TO FORM A COMPACT, AND (B) COMPRESSING SAID COMPACT ALONG AN AXIS PERPEDICULAR TO THE ORGINAL COMPRESSION AXIS TO A DENSITY OF AT LEAST 1.4 GM./CC.
References Cited (Backward Citations)
US1137373A
Cited
US1191383A
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US2799051A
Cited
US2997744A
Cited
US3325325A
Cited
US3357929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |