Philip Theodore Gianos

Title: Philip Theodore Gianos: Patents in Temperature Control and Oscillator Design.

Introduction

Philip Theodore Gianos is an inventor associated with Boulder, Colorado, and International Business Machines Corporation. His two listed patents address precise temperature regulation in electrophotographic equipment and improved frequency stability in oscillator design.

Latest Patents

Gianos’s listed patents include the following inventions.

- Automatic Temperature Controller for an Electrophotographic Apparatus. This invention regulates a copier fuser roll by selecting power-supply half-cycles for its heater according to temperature-sensor readings. A digital control method compares temperature-error values with stored output values to choose evenly spaced half-cycles, helping maintain the desired temperature while keeping the balance of positive and negative current close to unity.

- Butler Oscillator. This design places an amplitude-limiting amplifier and filter network between the oscillator’s voltage-amplification and impedance-matching stages. The arrangement supports linear operation, provides a relatively low and constant impedance path for the piezoelectric crystal, and supplies a sinusoidal drive waveform intended to improve frequency stability.

Career Highlights

Gianos’s listed patent work reflects contributions to electronic control and signal-generation technologies. His inventions address practical engineering goals: maintaining consistent fuser temperatures and supporting stable oscillator operation. The supplied information lists 2 patents.

Collaborations

Gianos’s listed coworkers include Joseph E. Cunningham, Jr., and Claude Herbert Feistel. His company affiliation is International Business Machines Corporation, commonly known as IBM.

Conclusion

Philip Theodore Gianos’s two listed patents demonstrate a focus on precise control and dependable electronic performance, spanning copier temperature regulation and oscillator frequency stability.