Patent US2798833A successfully refreshed from Google Patents.
US2798833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet metal composition material
Assignee: Individual
•
Filing: 1954-02-25
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Granted: 1957-07-09
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Expires: 1974-02-25
Abstract
No abstract record available.
Inventors
- 👤 Lapsensohn Lewis
- 👤 Lapsensohn Richard
- 👤 Lapsensohn Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:47
CPC Classifications
C; C09; C09J; C09J181/00; C09J181/04; B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; C08; C08L; C08L63/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24446; Y10T428/24479; Y10T428/24612; Y10T428/24628; Y10T428/31504; Y10T428/31652; Y10T428/31656; Y10T442/00; Y10T442/30; Y10T442/3382; Y10T442/3415
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A LAMINATED ARTICLE OF MANUFACTURE COMPRISING A SELF-SUPPORTING SHEET OF ASPHALT-IMPREGNATED FIBROUS MATERIAL AND A METALLIC SHEET ADHERED THERETO BY A MIXTURE OF A BONDING AGENT COMPRISING 25 TO 100 PARTS BY WEIGHT OF A POLYSULFIDE POLYMER WHICH IS A MOBILE LIQUID AT 25* C., HAVING A MOLECULAR WEIGHT OF 500 TO 12,000 AND HAVING THE FOLLOWING STRUCTURE:
Claim 2
Dependent Claim
58 words
A LAMINATED ARTICLE OF MANUFACTURE COMPRISING A SELF-SUPPORTING SHEET OF ASPHALT-IMPREGNATED FIBROUS MATERIAL AND A METALLIC SHEET ADHERED THERETO BY A MIXTURE OF A BONDING AGENT COMPRISING 25 TO 100 PARTS BY WEIGHT OF A POLYSULFIDE POLYMER WHICH IS A MOBILE LIQUID AT 25* C., HAVING A MOLECULAR WEIGHT OF 500 TO 12,000 AND HAVING THE FOLLOWING STRUCTURE:
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) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |