US2824812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hectograph composition
Assignee: GAF Chemicals Corp
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Filing: 1954-12-20
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Granted: 1958-02-25
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Expires: 1974-12-20
Abstract
No abstract record available.
Inventors
- 👤 Walter G Drautz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:45
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/025; B41M5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A HECTOGRAPH INK VEHICLE CONSISTING ESSENTIALLY OF OILS AND WAXES OF WHICH ABOUT 20 TO 35 PERCENT BY WEIGHT CONSISTS OF SUGAR CANE WAX HAVING A MELTING POINT OF FROM ABOUT 160 TO 185*F.
Claim 2
Dependent Claim
34 words
A HECTOGRAPH INK VEHICLE CONSISTING ESSENTIALLY OF OILS AND WAXES OF WHICH ABOUT 20 TO 35 PERCENT BY WEIGHT CONSISTS OF SUGAR CANE WAX HAVING A MELTING POINT OF FROM ABOUT 160 TO 185*F.
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) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |