Patent US3726727A successfully refreshed from Google Patents.
US3726727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical welding material
Assignee: Individual
•
Filing: 1971-01-15
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Granted: 1973-04-10
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Expires: 1991-01-15
Abstract
Abstract THE INVENTION PROVIDES A CHEMICAL WELDING COMPOSITION MATERIAL OF A POWDERED LIGHT METAL AND A METAL OXIDE MOLDED UNDER PRESSURE INTO A SOLID FORM, THEREBY PRODUCING A MATERIAL CAPABLE OF PROVIDING CONCENTRATED HEAT TO WELD WORKS QUICKLY, AND ENSURING ADAPTABILITY OF THE COMPOSITION MATERIAL FOR WORKS DIFFICULT TO WELD, SUCH AS WITH DEEP HOLES, NARROW CURVED PARTS, OR LENGTHY WORKPIECES, WITHOUT NEED FOR SPECIAL PROCEDURES OR TOOLS.
Inventors
- 👤 W Ishibashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:17
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/34; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/925; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12097
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |