US3015760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-conductor devices
Assignee: US Philips Corp
•
Filing: 1960-06-06
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Granted: 1962-01-02
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Expires: 1980-06-06
Abstract
No abstract record available.
Inventors
- 👤 Weil Frits
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:14
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/10; H10W76/17; H10W72/00; H10W76/60; H10W99/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169; Y10T29/49171
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A SEMICONDUCTOR DEVICE COMPRISING A SEALED ENVELOPE, SAID ENVELOPE INCLUDING A ONE-PIECE COPPER BASE MEMBER HAVING A DEPENDING, CYLINDRICAL, MOUNTING STUD, A SEMICONDUCTOR ELEMENT MOUNTED ONSAID BASE WITHIN THE ENVELOPE, AND ROLLED SCREW-THREAD ON THE STUD AND ADAPTED TO BE ENGAGED BY A NUT FOR ATTACHMENT OF SAID DEVICE TO A MOUNTING SURFACE, MOST OF SAID COPPER BASE MEMBER HAVING A HARDNESS BELOW 70 VPN, THE SAID ROLLED SCREW-THREAD EXHIBITING SIGNIFICANTLY GREATER HARDNESS THAN THE SAID MOST OF SAID COPPER BASE MEMBER.
Claim 2
Dependent Claim
82 words
A SEMICONDUCTOR DEVICE COMPRISING A SEALED ENVELOPE, SAID ENVELOPE INCLUDING A ONE-PIECE COPPER BASE MEMBER HAVING A DEPENDING, CYLINDRICAL, MOUNTING STUD, A SEMICONDUCTOR ELEMENT MOUNTED ONSAID BASE WITHIN THE ENVELOPE, AND ROLLED SCREW-THREAD ON THE STUD AND ADAPTED TO BE ENGAGED BY A NUT FOR ATTACHMENT OF SAID DEVICE TO A MOUNTING SURFACE, MOST OF SAID COPPER BASE MEMBER HAVING A HARDNESS BELOW 70 VPN, THE SAID ROLLED SCREW-THREAD EXHIBITING SIGNIFICANTLY GREATER HARDNESS THAN THE SAID MOST OF SAID COPPER BASE MEMBER.
References Cited (Backward Citations)
US2898668A
Cited
US2893904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |