US3179529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binder composition for gypsum wallboard
Assignee: Ingredion Inc
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Filing: 1962-03-08
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Granted: 1965-04-20
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Expires: 1982-03-08
Abstract
No abstract record available.
Inventors
- 👤 Lawrence J Hickey
- 👤 Emil D Mazzarella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:16
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/24; C04B24/38; C04B24/383; C04B28/00; C04B28/14; C04B2111/00; C04B2111/00474; C04B2111/00612; C04B2111/0062; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
THE COMPOSITION OF A CORE MATERIAL OF GYPSUM AND A STARCH DERIVATIVE BINDER, THE SAID STARCH DERIVATIVE BINDER BEING SELECTED FROM THE GROUP CONSISTING OF STARCH ETHERS AND STARCH ESTERS HAVING A WATER FLUIDITY VALUE OF AT LEAST 50 AND A DEGREE OF SUBSTITUTION RANGING FROM 0.01 TO 0.14.
Claim 2
Dependent Claim
49 words
THE COMPOSITION OF A CORE MATERIAL OF GYPSUM AND A STARCH DERIVATIVE BINDER, THE SAID STARCH DERIVATIVE BINDER BEING SELECTED FROM THE GROUP CONSISTING OF STARCH ETHERS AND STARCH ESTERS HAVING A WATER FLUIDITY VALUE OF AT LEAST 50 AND A DEGREE OF SUBSTITUTION RANGING FROM 0.01 TO 0.14.
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |