US3244553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of lead cladding using molten lead
Assignee: Knapp Mills Inc
•
Filing: 1965-01-11
•
Granted: 1966-04-05
•
Expires: 1985-01-11
Abstract
No abstract record available.
Inventors
- 👤 Victor E Knapp
- 👤 Neil F Ritchey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:25
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/19; C; C23; C23C; C23C26/00; C23C26/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
THE PROCESS OF FORMING AND METALLURGICALLY BONDING A RELATIVELY THICK LAYER OF LEAD ON A BASIC METAL INCLUDED IN THE GROUP CONSISTING OF COPPER, ALUMINUM, IRON AND THEIR ALLOYS, WHICH COMPRISES THE STEPS OF COATING A SURFACE OF THE BASIC METAL WITH A RELATIVELY THIN NICKEL LAYER, APPLYING A RELATIVELY THIN TIN-LEAD EUTECTIC LAYER TO THE NICKEL LAYER, AT LEAST PARTIALLY MELTING THE SAID EUTECTIC COATING, BUILDING UP A RELATIVELY THICK LAYER OF LEAD IN HOT MOLTEN FORM ABOVE THE SURFACE OF SAID EUTECTIC COATING WHEREBY THE HEATED LEAD AND THE PARTIALLY MELTED TINLEAD EUTECTIC COATING BOND TOGETHER, AND THEREAFTER COOLING THE BONDED METALS.
Claim 2
Dependent Claim
104 words
THE PROCESS OF FORMING AND METALLURGICALLY BONDING A RELATIVELY THICK LAYER OF LEAD ON A BASIC METAL INCLUDED IN THE GROUP CONSISTING OF COPPER, ALUMINUM, IRON AND THEIR ALLOYS, WHICH COMPRISES THE STEPS OF COATING A SURFACE OF THE BASIC METAL WITH A RELATIVELY THIN NICKEL LAYER, APPLYING A RELATIVELY THIN TIN-LEAD EUTECTIC LAYER TO THE NICKEL LAYER, AT LEAST PARTIALLY MELTING THE SAID EUTECTIC COATING, BUILDING UP A RELATIVELY THICK LAYER OF LEAD IN HOT MOLTEN FORM ABOVE THE SURFACE OF SAID EUTECTIC COATING WHEREBY THE HEATED LEAD AND THE PARTIALLY MELTED TINLEAD EUTECTIC COATING BOND TOGETHER, AND THEREAFTER COOLING THE BONDED METALS.
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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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |