Company Filing History:

10 out of 20,290

Motorola Corporation

Years Active: 1992-2001

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14 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6201457 - Notch filter incorporating saw devices and a delay line (2001-03-13),

2. 6172582 - Saw resonator and ladder filter with specified number of reflector electrode fingers (2001-01-09),

3. 6025762 - Delay line incorporating a surface acoustic wave ladder filter and (2000-02-15),

4. 5949306 - Saw ladder filter with split resonators and method of providing same (1999-09-07),

5. 5638036 - Acoustic wave ladder filter with unequal series and shunt transducer (1997-06-10),

6. 5635883 - Acoustic wave filter with filter-shaping element and method (1997-06-03),

7. 5600287 - Acoustic wave filter with reduced bulk-wave scattering loss, ladder (1997-02-04),

8. 5471178 - Ladder filter and method for producing conjugately matched impedance (1995-11-28),

9. 5434466 - Acoustic wave filter with reduced bulk-wave scattering loss and method (1995-07-18),

10. 5327626 - Method for processing robust acoustic reflectors (1994-07-12),

11. 5313177 - Method and apparatus for an acoustic wave filter (1994-05-17),

12. 5296824 - Low loss wide bandwidth parallel channel acoustic filter (1994-03-22),

13. 5270606 - Processing robust acoustic reflectors (1993-12-14),

14. 5162689 - Single-phase uni-directional acoustic wave transducer (1992-11-10),

Title: Innovations of Thomas S Hickernell

Introduction

Thomas S Hickernell is a notable inventor based in Mesa, AZ, with a remarkable portfolio of 14 patents. His work primarily focuses on advanced technologies in the field of acoustic wave devices, which have significant applications in telecommunications and signal processing.

Latest Patents

Among his latest patents is a notch filter incorporating saw devices and a delay line. This innovative notch filter includes a parallel coupled delay line and surface acoustic wave resonator, which provides a pole at a desired passband. The configuration of the surface acoustic wave resonator and the delay line allows for a zero at an undesired frequency or stopband. This design enhances the stopband rejection of an associated cascaded surface acoustic wave ladder filter. Additionally, the notch filter minimizes losses at the desired passband, thereby improving overall insertion loss performance. Another significant patent is for a saw resonator and ladder filter with a specified number of reflector electrode fingers. This invention includes a substrate with a first series resonator disposed on it, which is electrically coupled in series between the first electrical port and a first node. The design optimizes the number of reflective elements in the resonators, enhancing the filter's performance.

Career Highlights

Throughout his career, Thomas has worked with prominent companies such as Motorola Corporation and CTS Corporation. His contributions to these organizations have been instrumental in advancing technologies related to acoustic wave devices.

Collaborations

Thomas has collaborated with notable individuals in his field, including David Penunuri and Frederick Y Cho. Their collective expertise has contributed to the development of innovative solutions in acoustic wave technology.

Conclusion

Thomas S Hickernell's contributions to the field of acoustic wave devices through his patents and collaborations highlight his significant impact on technology. His work continues to influence advancements in telecommunications and signal processing.

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