US2921045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonding material containing methacrylic acid and partially polymerized methylmethacrylate
Assignee: North American Aviation Corp
•
Filing: 1955-05-05
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Granted: 1960-01-12
•
Expires: 1975-05-05
Abstract
No abstract record available.
Inventors
- 👤 Martino Barbero Di
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:23
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/04; C08F265/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A BONDING MATERIAL COMPRISED OF FROM ABOUT FIVE TO TEN PERCENT BY WEIGHT OF THE METHACRYLIC ACID, AND THE BALANCE OF PARTIALLY POLYMERIZED METHYLMERACRYLATE MONOMER HAVING A VISCOSITY OF FROM ABOUT 2000 TO 2500 CENTIPOISES, CATALYZED BY ABOUT 0.5% TO 0.7% OF 6% COBALT NAPHTHENATE, 0.7% TO 0.9% OF METHYL ETHYL KETONE PEROXIDE, AND 0.4% TO 0.5% OF DIETHYLALINE.
Claim 2
Dependent Claim
59 words
A BONDING MATERIAL COMPRISED OF FROM ABOUT FIVE TO TEN PERCENT BY WEIGHT OF THE METHACRYLIC ACID, AND THE BALANCE OF PARTIALLY POLYMERIZED METHYLMERACRYLATE MONOMER HAVING A VISCOSITY OF FROM ABOUT 2000 TO 2500 CENTIPOISES, CATALYZED BY ABOUT 0.5% TO 0.7% OF 6% COBALT NAPHTHENATE, 0.7% TO 0.9% OF METHYL ETHYL KETONE PEROXIDE, AND 0.4% TO 0.5% OF DIETHYLALINE.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |