Patent US1557473A successfully refreshed from Google Patents.
US2550520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint structure for laminates
Assignee: Individual
•
Filing: 1947-11-12
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Granted: 1951-04-24
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Expires: 1967-11-12
Abstract
No abstract record available.
Inventors
- 👤 Clarence G Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:46
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/02; B65D75/00; B65D75/26; Y; Y10; Y10S; Y10S138/00; Y10S138/01; Y10S138/06; Y10S138/07
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
147 words
A JOINT STRUCTURE FASHIONED FROM A COMPOSITE SHEET HAVING A FIRST SHEET MEMBER HAVING A LAYER OF HEAT SEALING MATERIAL ON EACH SIDE THEREOF, A PETROLEUM WAX LAYER ON ONE OF SAID HEAT SEALING LAYERS TERMINATING SHORT OF THE SHEET EDGE TO PROVIDE AN EXPOSED TERMINAL AREA OF THE HEAT SEALING MATERIAL, AND A SECOND SHEET MEMBER OVERLYING AND COEXTENSIVE WITH THE PARAFFIN WAX LAYER; THE JOINT COMPRISING SAID COMPOSITE SHEET JOINED TO ITSELF WITH A PORTION THEREOF EXTENDING OVER AND COVERING THE EXPOSED TERMINAL AREA OF THE SHEET AND A PORTION OF THE SECOND SHEET MEMBER AND WITH HEAT SEALING SURFACES ON THE FIRST SHEET IN FACE-TO-FACE ENGAGEMENT, THE PETROLEUM WAX LAYER HAVING BEEN MELTED TO PROVIDE A SEAL BETWEEN AND THE SECOND SHEET MEMBER AND OF THE SHEET AND THE SECOND SHEET MEMBER AND THE PORTION OF THE COMPOSITE SHEET OVERLAPPING THE SECOND SHEET MEMBER.
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) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |