US2586142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of lead coatings
Assignee: British Non Ferrous Metals Research Association
•
Filing: 1948-10-16
•
Granted: 1952-02-19
•
Expires: 1968-10-16
Abstract
No abstract record available.
Inventors
- 👤 Bailey Gordon Lennox James
- 👤 Harry C Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:49
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/04; C23C2/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROCESS FOR THE PRODUCTION OF LEAD COATINGS ON SOLID METAL SURFACES SELECTED FROM THE GROUP CONSISTING OF THE FERROUS AND CUPROUS METALS WHICH IN LIQUID LEAD SHOW A CONTACT ANGLE GREATER THAN 50* WHICH PROCESS COMPRISES DIPPING THE SOLID LEAD SHOW A CONTACT ANGLE CONTAINING NICKEL IN SOLUTION FROM AT LEAST 0.01% UP TO AS MUCH AS CAN BE DISSOLVED IN THE LIQUID LEAD; SAID NICKEL IN SUCH AMOUNTS HAVING THE PROPERTY OF REDUCING THE CONTACT ANGLE TO BELOW 15* THE BATH BEING SUBSTANTIALLY FREE FROM ANY METAL CAPABLE OF FORMING A STABLE INTERMETALLIC
Claim 2
Dependent Claim
95 words
A PROCESS FOR THE PRODUCTION OF LEAD COATINGS ON SOLID METAL SURFACES SELECTED FROM THE GROUP CONSISTING OF THE FERROUS AND CUPROUS METALS WHICH IN LIQUID LEAD SHOW A CONTACT ANGLE GREATER THAN 50* WHICH PROCESS COMPRISES DIPPING THE SOLID LEAD SHOW A CONTACT ANGLE CONTAINING NICKEL IN SOLUTION FROM AT LEAST 0.01% UP TO AS MUCH AS CAN BE DISSOLVED IN THE LIQUID LEAD; SAID NICKEL IN SUCH AMOUNTS HAVING THE PROPERTY OF REDUCING THE CONTACT ANGLE TO BELOW 15* THE BATH BEING SUBSTANTIALLY FREE FROM ANY METAL CAPABLE OF FORMING A STABLE INTERMETALLIC
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) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |