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Browse, filter, and analyze 59 patents across global jurisdictions.

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Patent Number Title Assignee Status Filing Date Grant Date Expires Remaining Claims Actions
US2969296A Thermal expansion fixture for spacing vaporized contacts on semiconductor devices AT&T Inc Expired / Lapsed 1958-12-08 1961-01-24 1978-12-08 0.0 yrs 2
US2959726A Semiconductor apparatus Honeywell Inc Expired / Lapsed 1958-10-08 1960-11-08 1978-10-08 0.0 yrs 0
US2929885A Semiconductor transducers RCA Corp Expired / Lapsed 1953-05-20 1960-03-22 1973-05-20 0.0 yrs 0
US2898477A Piezoelectric field effect semiconductor device AT&T Inc Expired / Lapsed 1955-10-31 1959-08-04 1975-10-31 0.0 yrs 0
US2846592A Temperature compensated semiconductor devices International Business Machines Corp Expired / Lapsed 1955-05-20 1958-08-05 1975-05-20 0.0 yrs 0
US2829075A Field controlled semiconductor devices and methods of making them RCA Corp Expired / Lapsed 1954-09-09 1958-04-01 1974-09-09 0.0 yrs 1
US2823312A Semiconductor network General Electric Co Expired / Lapsed 1955-01-26 1958-02-11 1975-01-26 0.0 yrs 0
US2764642A Semiconductor signal translating devices AT&T Inc Expired / Lapsed 1952-10-31 1956-09-25 1972-10-31 0.0 yrs 0
US2720572A Resistor element and method of fabricating same Fairchild Semiconductor Corp Expired / Lapsed 1950-03-23 1955-10-11 1970-03-23 0.0 yrs 0
US2713132A Electric rectifying devices employing semiconductors International Standard Electric Corp Expired / Lapsed 1953-10-07 1955-07-12 1973-10-07 0.0 yrs 0
US2655608A Semiconductor circuit controlling device AT&T Inc Expired / Lapsed 1952-07-22 1953-10-13 1972-07-22 0.0 yrs 0
US2634322A Contact for semiconductor devices RCA Corp Expired / Lapsed 1949-07-16 1953-04-07 1969-07-16 0.0 yrs 0
US2632062A Semiconductor transducer AT&T Inc Expired / Lapsed 1949-06-15 1953-03-17 1969-06-15 0.0 yrs 0
US2629767A Semiconductor amplifier or oscillator device RCA Corp Expired / Lapsed 1949-08-31 1953-02-24 1969-08-31 0.0 yrs 0
US2605306A Semiconductor multivibrator circuit RCA Corp Expired / Lapsed 1949-10-15 1952-07-29 1969-10-15 0.0 yrs 0
US2600500A Semiconductor signal translating device with controlled carrier transit times AT&T Inc Expired / Lapsed 1948-09-24 1952-06-17 1968-09-24 0.0 yrs 0
US2592683A Storage device utilizing semiconductor AT&T Inc Expired / Lapsed 1950-12-30 1952-04-15 1970-12-30 0.0 yrs 0
US2560594A Semiconductor translator and method of making it AT&T Inc Expired / Lapsed 1948-09-24 1951-07-17 1968-09-24 0.0 yrs 0
US2524034A Three-electrode circuit element utilizing semiconductor materials AT&T Inc Expired / Lapsed 1948-02-26 1950-10-03 1968-02-26 0.0 yrs 0
Showing 41 to 59 of 59 patents
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