US2907104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of soldering aluminum
Assignee: Individual
•
Filing: 1955-04-01
•
Granted: 1959-10-06
•
Expires: 1975-04-01
Abstract
No abstract record available.
Inventors
- 👤 Jack M Brown
- 👤 Edwin D Newton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:53
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/02; B23K35/0222; B23K35/22; B23K35/36; B23K35/3612; B23K35/3613
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
70 words
THE METHOD COMPRISING: DIPPING AN ALUMINUM PART INTO A VESSEL CONTAINING A LOWER LAYER OF HYDROFLUOSILICIC ACID AND AN UPPER LAYER OF ACTIVATED ROSIN IN AN ALCOHOL SOLUTION, HOLDING THE PART IN THE ACID FOR SUFFICIENT TIME TO REMOVE ALUMINUM OXIDE FILM FROM THE SURFACE THEREOF, AND WITHDRAWING THE ALUMINUM PART UPWARD THROUGH THE FLUX SOLUTION TO COAT THE OXIDE-FREE SURFACE WITH ROSIN AND THEREBY EXCLUDE AIR FROM CONTACT THEREWITH.
Claim 2
Independent Claim
70 words
THE METHOD COMPRISING: DIPPING AN ALUMINUM PART INTO A VESSEL CONTAINING A LOWER LAYER OF HYDROFLUOSILICIC ACID AND AN UPPER LAYER OF ACTIVATED ROSIN IN AN ALCOHOL SOLUTION, HOLDING THE PART IN THE ACID FOR SUFFICIENT TIME TO REMOVE ALUMINUM OXIDE FILM FROM THE SURFACE THEREOF, AND WITHDRAWING THE ALUMINUM PART UPWARD THROUGH THE FLUX SOLUTION TO COAT THE OXIDE-FREE SURFACE WITH ROSIN AND THEREBY EXCLUDE AIR FROM CONTACT THEREWITH.
Claim 3
Independent Claim
83 words
THE METHOD COMPRISING: DIPPING AN ALUMINUM PART INTO A VESSEL CONTAINING A LOWER LAYER OF HYDROFLUOSILICIC ACID AND AN UPPER LAYER OF ACTIVATED ROSIN IN AN ALCOHOL SOLUTION, HOLDING THE PART IN THE ACID FOR SUFFICIENT TIME TO REMOVE ALUMINUM OXIDE FILM FROM THESURFACE THEREOF, AND WITHDRAWING THE ALUMINUM PART UPWARD THROUGH THE FLUX SOLUTION TO COAT THE OXIDE-FREE SURFACE WITH ROSIN THE THEREBY EXCLUDE AIR FROM CONTACT THEREWITH, AND THEN USING MOLTEN SOLDER TO SECURE THE ROSIN-COATED PORTION TO A METALLIC MEMBER.
Claim 4
Independent Claim
83 words
THE METHOD COMPRISING: DIPPING AN ALUMINUM PART INTO A VESSEL CONTAINING A LOWER LAYER OF HYDROFLUOSILICIC ACID AND AN UPPER LAYER OF ACTIVATED ROSIN IN AN ALCOHOL SOLUTION, HOLDING THE PART IN THE ACID FOR SUFFICIENT TIME TO REMOVE ALUMINUM OXIDE FILM FROM THESURFACE THEREOF, AND WITHDRAWING THE ALUMINUM PART UPWARD THROUGH THE FLUX SOLUTION TO COAT THE OXIDE-FREE SURFACE WITH ROSIN THE THEREBY EXCLUDE AIR FROM CONTACT THEREWITH, AND THEN USING MOLTEN SOLDER TO SECURE THE ROSIN-COATED PORTION TO A METALLIC MEMBER.
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US2321071A
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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) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |