US2518281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated structure and adhesive therefor
Assignee: United States Gypsum Co
•
Filing: 1943-07-24
•
Granted: 1950-08-08
•
Expires: 1963-07-24
Abstract
No abstract record available.
Inventors
- 👤 Thomas P Camp
- 👤 Chester N Kolmodin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:19
CPC Classifications
C; C09; C09J; C09J195/00; C09J195/005; C08; C08L; C08L2666/00; C08L2666/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31815; Y10T428/31819; Y10T428/31823
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A LAMINATED STRUCTURE COMPRISING A PLURALITY OF GYPSUM BOARDS, EACH OF THE SAID GYPSUM BOARDS COMPOSED OF AGYPSUM CORE AND CELLULOSIC PAPER SURFACINGS THEREON AND AN ADHESIVE BETWEEN SAID BOARDS, THE SLAID ADHESIVE COMPRISING AN EMULSIFIED ASPHALT AND A PARTIALLY DEXTRINIZED FARINACESOUS PASTE CONSISTING WHOLLY OF HEAT TREATED CORN GRITS.
Claim 2
Dependent Claim
50 words
A LAMINATED STRUCTURE COMPRISING A PLURALITY OF GYPSUM BOARDS, EACH OF THE SAID GYPSUM BOARDS COMPOSED OF AGYPSUM CORE AND CELLULOSIC PAPER SURFACINGS THEREON AND AN ADHESIVE BETWEEN SAID BOARDS, THE SLAID ADHESIVE COMPRISING AN EMULSIFIED ASPHALT AND A PARTIALLY DEXTRINIZED FARINACESOUS PASTE CONSISTING WHOLLY OF HEAT TREATED CORN GRITS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |