U.S. patents available from 1976 to present.
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Patent No. 5421089

Fork With Timer

A fork with timer for providing a cue to a user after an elapsed period of time for indicating that another bite of food using the fork may be taken.

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Class 257/E27.043 - Lateral bipolar transistor in combination with diode, capacitor, or resistor (EPO)


Subclass of Class 257 - Active solid-state devices (e.g., transistors, solid-state diodes)
No. of patents: 5
Last issue date: 02/01/2000


NumberTitleIssue Date
6020623Integrated structure with device having a preset reverse conduction threshold
An integrated structure is made in a chip of semiconductor material inside an insulated N type region extending from a surface of the chip. The structure comprises a Zener diode formed by a P type first region extending from the surface inside the insulat...
02/01/2000
4758872Integrated circuit fabricated in a semiconductor substrate
For elimination of undesired leakage current, there is disclosed an integrated circuit fabricated in a semiconductor substrate of a first conductivity type which comprises at least first and second semiconductor elements, the first semiconductor element h...
07/19/1988
4355245Electronic circuit
In an electronic circuit of a current switch construction in which the emitters of a first transistor and a second transistor are commonly connected to a constant-current supply, and a load resistor is connected to the collector of the first transistor, t...
10/19/1982
4117507Diode formed in integrated-circuit structure
An IC chip with a substrate 10 of one conductivity type (P), overlain by an epitaxially grown layer 12 of the opposite conductivity type (N), includes a diode formed in part by a region 16 of that layer separated from other such isolated regions by a barr...
09/26/1978
3932879Bilaterally conducting zener diode and circuit therefor
A bilateral zener diode is described having improved terminal characteristics including a low noise factor, a predictable breakdown voltage level in the reverse breakdown mode within plus or minus 3 percent, and providing a sharp reference voltage which i...
01/13/1976
 
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