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Patent Assignment Details
NOTE:Results display only for issued patents and published applications. For pending or abandoned applications please consult USPTO staff.

Reel/Frame:006460/0762   Pages: 12
Recorded: 03/18/1993
Conveyance: CHANGE OF NAME (SEE DOCUMENT FOR DETAILS).
Total properties: 44
1
Patent #:
4001708
Issue Dt:
Application #:
05610127
Filing Dt:
Title:
2
Patent #:
4006316
Issue Dt:
Application #:
05626021
Filing Dt:
Title:
3
Patent #:
4081130
Issue Dt:
Application #:
05715065
Filing Dt:
Title:
4
Patent #:
4130731
Issue Dt:
12/19/1978
Application #:
05755615
Filing Dt:
12/29/1976
Title:
PORTABLE TELEPHONE SYSTEM
5
Patent #:
4211938
Issue Dt:
07/08/1980
Application #:
05951734
Filing Dt:
10/16/1978
Title:
TONE DETECTOR
6
Patent #:
4263556
Issue Dt:
04/21/1981
Application #:
05951736
Filing Dt:
10/16/1978
Title:
MONOSTABLE SYSTEM
7
Patent #:
4272650
Issue Dt:
06/09/1981
Application #:
05951737
Filing Dt:
10/16/1978
Title:
POWER SUPPLY SYSTEM
8
Patent #:
4439638
Issue Dt:
03/27/1984
Application #:
06343445
Filing Dt:
01/28/1982
Title:
SOUND-ACTIVATED CODE-CONTROLLED DETECTION SYSTEM FOR TELEPHONES AND THE LIKE
9
Patent #:
4446339
Issue Dt:
05/01/1984
Application #:
06371808
Filing Dt:
04/26/1982
Title:
ROTARY DIAL DECODER
10
Patent #:
D279003
Issue Dt:
05/28/1985
Application #:
06396874
Filing Dt:
07/09/1982
Title:
CODE ATTACHMENT HOUSING FOR A TELEPHONE STAND
11
Patent #:
D285200
Issue Dt:
08/19/1986
Application #:
06535228
Filing Dt:
09/23/1983
Title:
HANDSET TELEPHONE UNIT
12
Patent #:
D285197
Issue Dt:
08/19/1986
Application #:
06535242
Filing Dt:
09/23/1983
Title:
HANDSET TELEPHONE UNIT
13
Patent #:
4644561
Issue Dt:
02/17/1987
Application #:
06713923
Filing Dt:
03/20/1985
Title:
MODEM FOR RF SUBSCRIBER TELEPHONE SYSTEM
14
Patent #:
4675863
Issue Dt:
06/23/1987
Application #:
06713925
Filing Dt:
03/20/1985
Title:
SUBSCRIBER RF TELEPHONE SYSTEM FOR PROVIDING MULTIPLE SPEECH AND/OR DATA SIGNALS SIMULTANEOUSLY OVER EITHER A SINGLE OR A PLURALITY OF RF CHANNELS
15
Patent #:
4785260
Issue Dt:
11/15/1988
Application #:
06840908
Filing Dt:
03/18/1986
Title:
FREQUENCY SYNTHESIZER FOR BROADCAST TELEPHONE SYSTEM HAVING MULTIPLE ASSIGNABLE FREQUENCY CHANNELS
16
Patent #:
4825448
Issue Dt:
04/25/1989
Application #:
06893916
Filing Dt:
08/07/1986
Title:
SUBSCRIBER UNIT FOR WIRELESS DIGITAL TELEPHONE SYSTEM
17
Patent #:
4764940
Issue Dt:
08/16/1988
Application #:
06920230
Filing Dt:
11/24/1986
Title:
MODEM FOR RF SUBSCRIBER TELEPHONE SYSTEM
18
Patent #:
4779262
Issue Dt:
10/18/1988
Application #:
06921656
Filing Dt:
10/21/1986
Title:
CONNECTION OF SUBSCRIBER COMMUNICATION NETWORK BASE STATION TO EXTERNAL INFORMATION NETWORK
19
Patent #:
4817089
Issue Dt:
03/28/1989
Application #:
07031045
Filing Dt:
03/27/1987
Title:
SUBSCRIBER RF TELEPHONE SYSTEM FOR PROVIDING MULTIPLE SPEECH AND/OR DATA SIGNALS SIMULTANEOUSLY OVER EITHER A SINGLE OR A PLURALITY OF RF CHANNELS
20
Patent #:
4811420
Issue Dt:
03/07/1989
Application #:
07070970
Filing Dt:
07/08/1987
Title:
INITIALIZATION OF COMMUNICATION CHANNEL BETWEEN A SUBSCRIBER STATION AND A BASE STATION IN A SUBSCRIBER COMMUNICATION SYSTEM
21
Patent #:
4777633
Issue Dt:
10/11/1988
Application #:
07071279
Filing Dt:
08/14/1987
Title:
BASE STATION FOR WIRELESS DIGITAL TELEPHONE SYSTEM
22
Patent #:
4785450
Issue Dt:
11/15/1988
Application #:
07082238
Filing Dt:
08/06/1987
Title:
APPARATUS AND METHOD FOR OBTAINING FREQUENCY AGILITY IN DIGITAL COMMUNICATION SYSTEMS
23
Patent #:
4935927
Issue Dt:
06/19/1990
Application #:
07123395
Filing Dt:
11/20/1987
Title:
BASE STATION EMULATOR
24
Patent #:
4862107
Issue Dt:
08/29/1989
Application #:
07211758
Filing Dt:
06/27/1988
Title:
FREQUENCY SYNTHESIZER FOR BROADCAST TELEPHONE SYSTEM HAVING MULTIPLE ASSIGNABLE FREQUENCY CHANNELS
25
Patent #:
4940956
Issue Dt:
07/10/1990
Application #:
07247381
Filing Dt:
09/21/1988
Title:
BAND-PASS FILTER AND SUPPORT STRUCTURE THEREFOR
26
Patent #:
4893317
Issue Dt:
01/09/1990
Application #:
07256415
Filing Dt:
10/12/1988
Title:
DIGITAL SIGNALS AND FREQUENCY CORRECTION IN A DIGITAL WIRELESS SYSTEM
27
Patent #:
4996697
Issue Dt:
02/26/1991
Application #:
07256416
Filing Dt:
10/12/1988
Title:
A DEGLITCHING MEANS FOR DIGITAL COMMUNICATION SYSTEM
28
Patent #:
5101418
Issue Dt:
03/31/1992
Application #:
07256420
Filing Dt:
10/12/1988
Title:
DIGITAL TIME- MULTIPLEXED QUADRATURE FREQUENCY UPCONVERTER
29
Patent #:
4881240
Issue Dt:
11/14/1989
Application #:
07256557
Filing Dt:
10/12/1988
Title:
AN EQUALIZER CIRCUIT FOR DIGITAL SYSTEMS
30
Patent #:
5177741
Issue Dt:
01/05/1993
Application #:
07256577
Filing Dt:
10/12/1988
Title:
SUBSCRIBER UNIT FOR WIRELESS DIGITAL TELEPHONE SYSTEM
31
Patent #:
4994802
Issue Dt:
02/19/1991
Application #:
07256579
Filing Dt:
10/12/1988
Title:
SUBSCRIBER UNIT FOR WIRELESS DIGITAL TELEPHONE SYSTEM
32
Patent #:
4943983
Issue Dt:
07/24/1990
Application #:
07256580
Filing Dt:
10/12/1988
Title:
SUBSCRIBER UNIT FOR WIRELESS DIGITAL TELEPHONE SYSTEM
33
Patent #:
4953197
Issue Dt:
08/28/1990
Application #:
07281186
Filing Dt:
12/08/1988
Title:
COMBINATION SPATIAL DIVERSITY SYSTEM
34
Patent #:
4912705
Issue Dt:
03/27/1990
Application #:
07324651
Filing Dt:
03/16/1989
Title:
SUBSCRIBER RF TELEPHONE SYSTEM FOR PROVIDING MULTIPLE SPEECH AND/OR DATA SIGNALS SIMULTANEOUSLY OVER EITHER A SINGLE OR A PLURALITY OF RF CHANNELS
35
Patent #:
5022024
Issue Dt:
06/04/1991
Application #:
07349301
Filing Dt:
05/08/1989
Title:
SUBSCRIBER RF TELEPHONE SYSTEM FOR PROVIDING MULTIPLE SPEECH AND/OR DATA SIGNALS SIMULTANEOUSLY OVER EITHER A SINGLE OR A PLURALITY OF RF CHANNELS
36
Patent #:
4974099
Issue Dt:
11/27/1990
Application #:
07369292
Filing Dt:
06/21/1989
Title:
COMMUNICATION SIGNAL COMPRESSION SYSTEM AND METHOD
37
Patent #:
5008900
Issue Dt:
04/16/1991
Application #:
07394497
Filing Dt:
08/14/1989
Title:
SUBSCRIBER UNIT FOR WIRELESS DIGITAL SUBSCRIBER COMMUNICATION SYSTEM
38
Patent #:
5067141
Issue Dt:
11/19/1991
Application #:
07419501
Filing Dt:
10/10/1989
Title:
INTERPOLATOR FOR VARYING A SIGNAL SAMPLING RATE
39
Patent #:
5168507
Issue Dt:
12/01/1992
Application #:
07433995
Filing Dt:
11/09/1989
Title:
AUTOMATIC ADAPTIVE EQUALIZER
40
Patent #:
5121391
Issue Dt:
06/09/1992
Application #:
07439100
Filing Dt:
11/20/1989
Title:
SUBSCRIBER RF TELEPHONE SYSTEM FOR PROVIDING MULTIPLE SPEECH AND/OR DATA SIGNALS SIMULTANEOUSLY OVER EITHER A SINGLE OR A PLURALITY OF RF CHANNELS
41
Patent #:
5072308
Issue Dt:
12/10/1991
Application #:
07617789
Filing Dt:
11/26/1990
Title:
COMMUNICATION SIGNAL COMPRESSION SYSTEM AND METHOD
42
Patent #:
5119375
Issue Dt:
06/02/1992
Application #:
07634770
Filing Dt:
12/27/1990
Title:
SUBSCRIBER RF TELEPHONE SYSTEM FOR PROVIDING MULTIPLE SPEECH AND/OR DATA SIGNALS SIMULTANEOUSLY OVER EITHER A SINGLE OR A PLURALITY OF RF CHANNELS
43
Patent #:
5146473
Issue Dt:
09/08/1992
Application #:
07658065
Filing Dt:
02/20/1991
Title:
SUBSCRIBER UNIT FOR WIRELESS DIGITAL SUBSCRIBER COMMUNICATION SYSTEM
44
Patent #:
5159705
Issue Dt:
10/27/1992
Application #:
07853334
Filing Dt:
03/13/1992
Title:
FREQUENCY SYNTHESIZER CIRCUIT
Assignor
1
INTERNATIONAL MOBILE MACHINES CORPORATION
Exec Dt:
02/18/1993
Assignee
1
INTERDIGITAL TECHNOLOGY CORPORATION
900 MARKET STREET, 2ND FLOOR
WILMINGTON, DELAWARE 19801
Correspondence name and address
ROBERT S. BRAMSON, ESQ.
2200 RENAISSANCE BLVD.
SUITE 105
KING OF PRUSSIA, PA 19406

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