Patent Assignment
Reel/Frame 006258/0010
Assignment of Assignors Interest.
Recorded: 1992-09-01
Pages: 4
Assignor
PLESSEY OVERSEAS LIMITED
Executed: 1992-06-29
Assignee
PLESSEY SEMICONDUCTORS LIMITED
CHENEY MANOR, SWINDON, WILTSHIRE, SN2 2QW, ENGLAND, SN2 2QW,, ENGLAND, UNITED KINGDOM
Covered Properties
(72)
Silicon Dioxide Etch Rate Control by Controlled Addition of P2 O5 and B2 03
Patent:
3,913,126 →
Application:
05/387,055 →
Method of Manufacturing Semi-Conductor Devices
Patent:
4,079,509 →
Application:
05/586,855 →
Method of Manufacturing a Semiconductor Integrated Circuit Device Havi Ng a Conductive Plane and Diffuse Network of Conductive Tracks
Patent:
4,053,336 →
Application:
05/634,277 →
Semiconductor Devices
Patent:
4,161,742 →
Application:
05/876,137 →
Semiconductor Devices
Patent:
4,241,424 →
Application:
05/946,406 →
Semiconductor Devices
Patent:
4,223,335 →
Application:
06/018,985 →
Receiver Arrangement
Patent:
4,307,422 →
Application:
06/075,107 →
Phase Locked Loop Frequency Synthesizer with Fine Tuning
Patent:
4,344,045 →
Application:
06/087,723 →
Frame Aligner for Digital Telecommunications Exchange System
Patent:
4,368,531 →
Application:
06/175,780 →
Non-Volatile Static Ram Element
Patent:
4,419,744 →
Application:
06/294,358 →
Adjustable Ratio Divider
Patent:
4,495,630 →
Application:
06/328,248 →
Adjustable Ratio Divider
Patent:
4,580,282 →
Application:
06/443,677 →
Electrical Component Simulator
Patent:
4,785,250 →
Application:
06/459,331 →
Automatic Electrical Motor Speed Control
Patent:
4,481,448 →
Application:
06/510,235 →
Time Slot Arrangements for Local Area Network Systems
Patent:
4,697,263 →
Application:
06/518,476 →
Radio Receiver
Patent:
4,628,518 →
Application:
06/532,653 →
Integrated Circuit Processing Methods
Patent:
4,536,249 →
Application:
06/597,426 →
Method of Producing a Layered Structure
Patent:
4,536,951 →
Application:
06/621,187 →
Method of Producing a Layered Structure
Patent:
4,698,125 →
Application:
06/621,208 →
Pll with Lock Up Detector and Lock Acquisition Circuit
Patent:
4,596,963 →
Application:
06/630,406 →
Signal Strength Detector
Patent:
4,620,114 →
Application:
06/646,113 →
Circuits for Converting from One Television Scanning Standard to Another
Patent:
4,583,118 →
Application:
06/650,643 →
Constant Voltage Circuits
Patent:
4,608,529 →
Application:
06/650,644 →
Bipolar Transistor Logic Circuits
Patent:
4,633,104 →
Application:
06/650,649 →
Flip-Flop Phase Detector Circuit for Phase Locked Loop
Patent:
4,593,253 →
Application:
06/655,695 →
Frame Aligner for Use in Telecommunications Systems
Patent:
4,617,659 →
Application:
06/669,358 →
Fm Detector with Injection Locked Divider Input Circuit
Patent:
4,608,539 →
Application:
06/671,948 →
Fm Demodulator Using Combined Output of Plural Fm Detectors
Patent:
4,612,510 →
Application:
06/679,943 →
Adaptive Cancellation Bridge Circuit
Patent:
4,670,870 →
Application:
06/725,539 →
Semiconductor Decive Containing Bipolar Transistor Formed by Method Including Three Photolithgraphic Steps
Patent:
4,700,456 →
Application:
06/790,607 →
Frequency Modulation Receiver Employing Frequency Divider
Patent:
4,806,872 →
Application:
06/868,908 →
Arithmetic Logic and Shift Device
Patent:
4,760,544 →
Application:
06/876,533 →
Interpolator/Decimator Filter Structure and a Digital Filter Therefor
Patent:
4,864,526 →
Application:
06/894,996 →
Low Frequency Digital Notch Filter
Patent:
4,947,360 →
Application:
06/895,020 →
Fm Demodulators
Patent:
4,746,873 →
Application:
06/898,176 →
Analogue to Digital Converter
Patent:
4,774,499 →
Application:
07/008,675 →
Low Voltage Bias Circuit
Patent:
4,833,344 →
Application:
07/010,930 →
Transistor Constant Bias Circuits
Patent:
4,763,018 →
Application:
07/011,098 →
Tuner Circuits and Voltage Generators Therefor
Patent:
4,792,989 →
Application:
07/018,216 →
Frequency Dividing Arrangements
Patent:
4,862,515 →
Application:
07/019,276 →
High Speed Integrator for Data Recovery and a Costas Phase-Locked-Loop Circuit Incorporating
Patent:
4,806,880 →
Application:
07/019,901 →
Plural Emitter Memory with Voltage Clamping Plural Emitter Transistor
Patent:
4,823,315 →
Application:
07/051,450 →
Phase Comparator Lock Detect Circuit and a Synthesiser Using Same
Patent:
4,806,878 →
Application:
07/056,476 →
Frequency Doubling Oscillator and Mixer Circuit
Patent:
4,810,976 →
Application:
07/060,708 →
Method of Making a Ldd Mosfet
Patent:
4,837,179 →
Application:
07/088,108 →
Analogue to Digital Conversion: Method and Apparatus Therefor
Patent:
4,982,193 →
Application:
07/110,763 →
Processor Controlled Phase Locked Loop Multi-Band Frequency Synthesizer
Patent:
4,862,109 →
Application:
07/130,389 →
Analogue to Digital Converters
Patent:
4,870,416 →
Application:
07/146,748 →
Fabrication of Mos-Transistors
Patent:
4,833,097 →
Application:
07/150,410 →
Manchester Code Clock and Data Recovery System
Patent:
4,853,943 →
Application:
07/156,496 →
Quadrature Signals Generator
Patent:
4,908,532 →
Application:
07/195,640 →
Amplifiers
Patent:
4,924,190 →
Application:
07/222,421 →
Phase Shift Arrangement
Patent:
4,922,127 →
Application:
07/245,154 →
Fm Demodulator Including Injection Locked Oscillator/Divider
Patent:
4,953,010 →
Application:
07/301,382 →
Universal Cell for Bipolar Npn and Pnp Transistors and Resistive Elements
Patent:
5,021,856 →
Application:
07/323,269 →
Clock Driven Data Sampling Circuit
Patent:
4,940,948 →
Application:
07/329,718 →
Broad Band Vco Control System for Clock Recovery
Patent:
4,943,788 →
Application:
07/329,719 →
Dividing Mechanisms for Frequency Synthesisers
Patent:
4,943,981 →
Application:
07/330,710 →
Oscillator Network for Radio Receiver
Patent:
4,947,141 →
Application:
07/335,087 →
Data Path Checking System
Patent:
5,042,038 →
Application:
07/338,744 →
Local Oxidation of Silicon Process
Patent:
4,909,897 →
Application:
07/346,028 →
Frequency Signal Synthesiser
Patent:
4,922,548 →
Application:
07/358,796 →
Analog to Digital Converters
Patent:
4,987,416 →
Application:
07/390,545 →
Crystal Oscillator with Offset and Hysteresis
Patent:
5,010,308 →
Application:
07/438,453 →
Narrow Band Communication System
Patent:
5,230,086 →
Application:
07/470,611 →
Circuit Arrangement for Verifying Data Stored in a Random Access Memory
Patent:
5,046,047 →
Application:
07/473,665 →
Method and a Digital Electronic Device for the Evaluation of an Extremum of a Set of Binary Encoded Data Words
Patent:
5,122,979 →
Application:
07/528,973 →
Phase Detector
Patent:
5,157,341 →
Application:
07/565,065 →
Frequency Synthesizer Pll Having Digital and Analog Phase Detectors
Patent:
5,057,793 →
Application:
07/604,153 →
Frequency Synthesizers with Fractional Division
Patent:
5,124,670 →
Application:
07/613,568 →
Am/Fm Modulator in Which Am Can Be Converted to Fm by Vector Addition
Patent:
5,155,455 →
Application:
07/663,869 →
Digital Phase Locked Loop Circuit
Patent:
5,193,103 →
Application:
07/729,315 →
Related Assignments
(9)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignors Interest.
Aug 6, 1980
From: CHOPPING GEOFFREY
To: PLESSEY COMPANY LIMITED, THE,
Reel/Frame 003793/0438 →
Assignment of Assignors Interest.
Nov 21, 1980
From: PLESSEY HANDEL UND INVESTMENTS AG, GARTENSTRASSE 2, ZUG, SWITZERLAND
To: PLESSEY OVERSEAS LIMITED
Reel/Frame 003813/0489 →
Assignment of Assignors Interest.
Jun 30, 1988
From: FERRANTI PLC.,
To: PLESSEY OVERSEAS LIMITED
Reel/Frame 004925/0491 →
Assignment of Assignors Interest.
May 15, 1989
From: BUTLER, ALAN L.; CHILDS, PETER A.
To: PLESSEY OVERSEAS LIMITED
Reel/Frame 005080/0993 →
Assignment of Assignors Interest.
Dec 16, 1992
From: PLESSEY OVERSEAS LIMITED
To: PLESSEY SEMICONDUCTORS LIMITED
Reel/Frame 006348/0221 →
Security Interest
Sep 16, 1998
From: MITEL CORPORATION, A CORPORATION UNDER THE LAWS OF CANADA
To: CANADIAN IMPERIAL BANK OF COMMERCE, AS SECURED PARTY
Reel/Frame 009445/0299 →
Change of Name
Nov 17, 1998
From: PLESSEY SEMICONDUCTOR LIMITED
To: MITEL SEMICONDUCTOR LIMITED
Reel/Frame 009570/0972 →
Re-Record to Correct the Assignor Previously Recorded on Reel 9445 Frame 0299.
Mar 17, 1999
From: MITEL SEMICONDUCTOR LIMITED
To: CANADIAN IMPERIAL BANK OF COMMERCE, AS SECURED PARTY
Reel/Frame 009798/0040 →
Release of Security Interest
Mar 7, 2001
From: CANADIAN IMPERIAL BANK OF COMMERCE
To: MITEL CORPORATION; MITEL SEMICONDUCTOR AMERICAS, INC., A DELAWARE CORPORATION; MITEL, INC., A DELAWARE CORPORATION; MITEL SEMICONDUCTOR, INC., A DELAWARE CORPORATION
Reel/Frame 011590/0406 →