Patent US3486932A successfully refreshed from Google Patents.
US3486932A
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US
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Electroconductive paper
Assignee: Calgon Corp
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Filing: 1967-03-13
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Granted: 1969-12-30
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Expires: 1987-03-13
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Schaper
- 👤 Merwin Frederick Hoover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:58
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/75; B; B41; B41M; B41M5/00; B41M5/20; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F20/52; C08F20/54; C08F20/60; G; G03; G03G; G03G5/00; G03G5/10; G03G5/105; G03G5/107; Y; Y10; Y10S; Y10S526/00; Y10S526/923; Y10T; Y10T428/00; Y10T428/27; Y10T428/273; Y10T428/277
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2807910A
Cited
US3125550A
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US3216853A
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US3264137A
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GB1015795A
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US3295967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |