US3537175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead frame for semiconductor devices and method for making same
Assignee: Advalloy Inc
•
Filing: 1967-10-05
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Granted: 1970-11-03
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Expires: 1987-10-05
Abstract
No abstract record available.
Inventors
- 👤 Michael J St Clair
- 👤 William L Keady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:54
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/40; H10W70/453; H10W70/01; H10W70/04; H10W70/042; H10W70/421; H10W70/438; H10W70/456; H10W70/457; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9265; Y10S428/929; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49121; Y10T428/00; Y10T428/12; Y10T428/12188; Y10T428/12194; Y10T428/12347; Y10T428/12361; Y10T428/12486; Y10T428/12493; Y10T428/12535; Y10T428/12542; Y10T428/12549; Y10T428/12597; Y10T428/12611; Y10T428/12618; Y10T428/12736; Y10T428/1275; Y10T428/12757; Y10T428/12771; Y10T428/12861; Y10T428/12889; Y10T428/12937
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3080640A
Cited
GB963376A
Cited
US3404213A
Cited
US3317287A
Cited
US3297442A
Cited
US3413713A
Cited
US3388048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |