Patent US3246994A successfully refreshed from Google Patents.
US3246994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plating semiconductor materials
Assignee: Transitron Electronic Corp
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Filing: 1962-01-17
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Granted: 1966-04-19
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Expires: 1982-01-17
Abstract
No abstract record available.
Inventors
- 👤 Ian M Ritchie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:10
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/40; H10P14/46; H10P14/47; C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
AN ELECTROLESS COPPER PLATING SOLUTION CONSISTING ESSENTIALLY OF COPPER FLUOROBORATE, BORIC ACID, FLUOROBORIC ACID AND HYDROFLUORIC ACID, WHEREIN THE CONCENTRATION OF SAID COPPER FLUOROBORATE IS WITHIN THE RANGE OF 30% TO 60%, THE CONCENTRATION OF SAID FLUOROBORIC ACID IS WITHIN THE RANGE OF 26% TO 82%, THE CONCENTRATION OF SAID HYDROFLUORIC ACID IS WITHIN THE RANGE OF 28% TO 68%, THE RELATIVE VOLUMES OF SAID COPPER FLUOROBORATE SOLUTION, SAID FLUOROBORIC ACID AND SAID HYDROFLUORIC ACID IN CC. IS WITHIN THE RANGES OF 50 TO 100; 3 TO 7; 16 TO 24, RESEPCTIVELY, AND THE WEIGHT OF SAID BORIC ACID FOR SAID STATED CONCENTRATION RANGES IS WITHIN THE RANGE OF 1 1/3 TO 2 2/3 GMS.
Claim 2
Dependent Claim
115 words
AN ELECTROLESS COPPER PLATING SOLUTION CONSISTING ESSENTIALLY OF COPPER FLUOROBORATE, BORIC ACID, FLUOROBORIC ACID AND HYDROFLUORIC ACID, WHEREIN THE CONCENTRATION OF SAID COPPER FLUOROBORATE IS WITHIN THE RANGE OF 30% TO 60%, THE CONCENTRATION OF SAID FLUOROBORIC ACID IS WITHIN THE RANGE OF 26% TO 82%, THE CONCENTRATION OF SAID HYDROFLUORIC ACID IS WITHIN THE RANGE OF 28% TO 68%, THE RELATIVE VOLUMES OF SAID COPPER FLUOROBORATE SOLUTION, SAID FLUOROBORIC ACID AND SAID HYDROFLUORIC ACID IN CC. IS WITHIN THE RANGES OF 50 TO 100; 3 TO 7; 16 TO 24, RESEPCTIVELY, AND THE WEIGHT OF SAID BORIC ACID FOR SAID STATED CONCENTRATION RANGES IS WITHIN THE RANGE OF 1 1/3 TO 2 2/3 GMS.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |