Patent US4306307A successfully refreshed from Google Patents.
Patent US6547790B2 successfully refreshed from Google Patents.
Patent US3850433A successfully refreshed from Google Patents.
Patent US2821597A successfully refreshed from Google Patents.
Patent US4584640A successfully refreshed from Google Patents.
Patent US3963590A successfully refreshed from Google Patents.
US3963590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for electroplating polyoxymethylene
Assignee: EIDP Inc
•
Filing: 1975-02-25
•
Granted: 1976-06-15
•
Expires: 1995-02-25
Abstract
Abstract An improved process for electroplating polyoxymethylene is provided wherein a shaped article of polyoxymethylene is treated with quinoline or gamma -butyrolactone preferably by immersion techniques prior to subjecting the shaped article to surface treatment with an acid etching agent.
Inventors
- 👤 Edward Johnson Deyrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:36
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/2006; C23C18/2026; C23C18/2033; C23C18/2046; C23C18/2073; C23C18/208; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0326; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/38; H05K3/381; Y; Y10; Y10S; Y10S205/00; Y10S205/917; Y10S205/924; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/936; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31688; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
86 words
In a process for electroplating a shaped article of polyoxymethylene by the sequential steps of etching the surface of said article with an acid etchant, neutralizing the etched surface of said article with a base solution, treating said article with a catalyst for electroless deposition, depositing by electroless plating a metal coating on said article, and depositing by electroplating a metal coating on said article, the improvement which comprises contacting said article with a liquid comprising quinoline or γ-butyrolactone before etching the surface of said article.
Claim 2
Dependent Claim
86 words
In a process for electroplating a shaped article of polyoxymethylene by the sequential steps of etching the surface of said article with an acid etchant, neutralizing the etched surface of said article with a base solution, treating said article with a catalyst for electroless deposition, depositing by electroless plating a metal coating on said article, and depositing by electroplating a metal coating on said article, the improvement which comprises contacting said article with a liquid comprising quinoline or γ-butyrolactone before etching the surface of said article.
Claim 3
Dependent Claim
21 words
The process of claim 1 wherein said liquid comprises quinoline or γ-butyrolactone and up to about 75% by volume of water.
References Cited (Backward Citations)
US3554880A
Cited
US3533828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |