Patent US4298424A successfully refreshed from Google Patents.
US4298424A
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Method for etching polyamide shaped articles
Assignee: Vbe Industries Ltd
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Filing: 1980-06-19
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Granted: 1981-11-03
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Expires: 2000-06-19
Abstract
Abstract Disclosed is a method for etching a polyamide shaped article which comprises etching a polyamide shaped article formed from a composition comprising 100 parts by weight of a polyamide and 10 to 50 parts by weight of an inorganic filler with an aqueous solution of borofluoric acid. According to this treating method, a good surface capable of providing a plated article having a high adhesion and a reduced deviation of the adhesion can be formed on the polyamide shaped article.
Inventors
- 👤 Sachio Terada
- 👤 Akito Suhara
- 👤 Toshiro Shimada
- 👤 Takashi Nakamura
- 👤 Kunizo Hujii
- 👤 Nobuichi Nakahira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:27
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/22; C23C18/24; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J2377/00; C08J2423/00; C08J2423/02; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0346; H05K1/0353; H05K1/0373; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/38; H05K3/381
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
46 words
A method for etching polyamide shaped articles, which comprises etching a shaped article, which is obtained by shaping a composition comprising 100 parts by weight of a polyamide and 10 to 50 parts by weight of an inorganic filler, with an aqueous solution of borofluoric acid.
Claim 2
Independent Claim
46 words
A method for etching polyamide shaped articles, which comprises etching a shaped article, which is obtained by shaping a composition comprising 100 parts by weight of a polyamide and 10 to 50 parts by weight of an inorganic filler, with an aqueous solution of borofluoric acid.
Claim 3
Dependent Claim
29 words
A method for etching polyamide shaped articles according to claim 1 wherein the inorganic filler is one capable of being dissolved out with an aqueous solution of borofluoric acid.
Claim 4
Dependent Claim
22 words
A method for etching polyamide shaped articles according to claim 1 wherein the inorganic filler is calcium silicate, talc or titanium oxide.
Claim 5
Dependent Claim
27 words
A method for etching polyamide shaped articles according to claim 1 wherein the aqueous solution of borofluoric acid has a concentration of 15 to 35% by weight.
Claim 6
Dependent Claim
25 words
A method for etching polyamide shaped articles according to claim 1 wherein the shaped article is etched at a temperature of 20° to 40° C.
References Cited (Backward Citations)
US3567594A
Cited
US3758388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-02 | 1985-05-04 | 1985-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-02 | 1989-05-04 | 1989-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-02 | 1993-05-04 | 1993-11-03 | $7700.00 | Window Closed / Lapsed |