|
| US4042970 | 13 Feb 1976 | 16 Aug 1977 | Wagner Electric Corporation | Dual frequency narrow-band frequency modulated keyable control circuit and keying circuit therefor |
| US4080594 | 14 Jul 1976 | 21 Mar 1978 | | Doppler shift actuator and intrusion systems |
| US4090182 | 22 Mar 1976 | 16 May 1978 | | Security system employing radio transmitter and receiver |
| US4215342 | 31 Mar 1978 | 29 Jul 1980 | Intex Inc. | Merchandise tagging technique |
| US4281321 | 9 Jun 1980 | 28 Jul 1981 | Sensormatic Electronics Corporation | Surveillance system employing a floor mat radiator |
| US4353064 | 14 Jan 1981 | 5 Oct 1982 | Honeywell Inc. | Battery operated access control card |
| US4412356 | 14 Jan 1980 | 25 Oct 1983 | Iowa State University Research Foundation, Inc. | Light actuated remote control security system |
| US4471343 | 2 Sep 1981 | 11 Sep 1984 | | Electronic detection systems and methods |
| US4576244 | 23 Feb 1984 | 18 Mar 1986 | Zemco, Inc. | Dieter's weighing scale |
| US4580136 | 3 Oct 1983 | 1 Apr 1986 | Nippon Soken, Inc. | Luggage door unlocking device |
| US4587522 | 27 Jan 1984 | 6 May 1986 | | Vehicle warning system |
| US4596985 | 28 Nov 1983 | 24 Jun 1986 | Kiekert GmbH & Co. Kommanditgesellschaft
Telefunken Electronic GmbH | Radio-controlled lock method with automatic code change |
| US4622542 | 26 Jun 1985 | 11 Nov 1986 | Controlled Information Corporation | Magnetic article surveillance system, method and coded marker |
| US4659314 | 7 Feb 1986 | 21 Apr 1987 | | Survey technique for readership of publications |
| US4661799 | 23 Aug 1985 | 28 Apr 1987 | Electromatic (Proprietary) Limited | Loop detector |
| US4670746 | 18 Sep 1984 | 2 Jun 1987 | Nissan Motor Company, Limited | Keyless entry system for automotive devices with feature for giving caution for locking wireless code transmitter in vehicle |
| US4672375 | 10 Apr 1985 | 9 Jun 1987 | Nissan Motor Company, Limited | Keyless entry system for automotive devices with compact, portable wireless code transmitter, and feature for preventing users from locking transmitter in vehicle |
| US4672376 | 24 Feb 1986 | 9 Jun 1987 | | Portable control code transmitter with delayed code neutralization |
| US4688026 | 21 Apr 1986 | 18 Aug 1987 | | Method of collecting and using data associated with tagged objects |
| US4688036 | 28 Nov 1984 | 18 Aug 1987 | Nissan Motor Company, Limited | Keyless entry system for automotive vehicle with power consumption saving feature |
| US4719460 | 18 Sep 1984 | 12 Jan 1988 | Nissan Motor Company, Limited | Keyless entry system for automotive vehicle devices with theft-prevention feature |
| US4726771 | 23 Oct 1986 | 23 Feb 1988 | | Flat switch insertable into a magazine and usable as part of a survey technique for readership of publications |
| US4733215 | 11 Aug 1986 | 22 Mar 1988 | DELTA Elettronica S.p.A. | Remote control apparatus for a property protection device |
| US4737784 | 18 Sep 1984 | 12 Apr 1988 | Nissan Motor Company, Limited | Keyless entry system for automotive vehicle devices with weak-battery alarm |
| US4755799 | 27 Feb 1986 | 5 Jul 1988 | | Microcomputer controlled combination lock security system |
| US4761645 | 27 Feb 1985 | 2 Aug 1988 | Nissan Motor Company, Limited | Keyless entry system for automotive devices including steering lock device with compact, portable wireless code transmitter |
| US4763121 | 11 Aug 1986 | 9 Aug 1988 | Nissan Motor Company, Limited | Keyless entry system for automatically operating automotive door locking devices without manual operation |
| US4779076 | 20 May 1987 | 18 Oct 1988 | Controlled Information Corp. | Deactivatable coded marker and magnetic article surveillance system |
| US4779090 | 6 Aug 1986 | 18 Oct 1988 | | Electronic security system with two-way communication between lock and key |
| US4786900 | 23 Sep 1986 | 22 Nov 1988 | Casio Computer Co. LTD. | Electronic key apparatus |
| US4794268 | 19 Jun 1987 | 27 Dec 1988 | Nissan Motor Company, Limited | Automotive keyless entry system incorporating portable radio self-identifying code signal transmitter |
| US4811013 | 10 Apr 1986 | 7 Mar 1989 | Kokusan Kinzoku Kogyo Kabushiki Kaisha | Vehicle use-locking and unlocking system |
| US4818973 | 14 Jul 1987 | 4 Apr 1989 | Kabushiki Kaisha Wako Sangyo | System for detecting a transfer of an article |
| US4835372 | 24 Jul 1987 | 30 May 1989 | ClinCom Incorporated | Patient care system |
| US4835533 | 10 Apr 1986 | 30 May 1989 | Kokusan Kinzoku Kogyo Kabushiki Kaisha | Vehicle-use locking and unlocking system |
| US4850009 | 31 May 1988 | 18 Jul 1989 | CliniCom Incorporated | Portable handheld terminal including optical bar code reader and electromagnetic transceiver means for interactive wireless communication with a base communications station |
| US4857716 | 8 Jun 1988 | 15 Aug 1989 | CliniCom Incorporated | Patient identification and verification system and method |
| US4866433 | 27 Feb 1987 | 12 Sep 1989 | Kokusan Kinzoku Kogyo Kabushiki Kaisha | Vehicle locking and unlocking system |
| US4868915 | 20 Jul 1988 | 19 Sep 1989 | Allied Corporation | Keyless entry system having remote marker for motor vehicles |
| US4873530 | 29 Sep 1986 | 10 Oct 1989 | Nissan Motor Co., Ltd. | Antenna device in automotive keyless entry system |
| US4897644 | 3 Sep 1987 | 30 Jan 1990 | Nissan Motor Company, Limited | Radio-wave transmission system of keyless entry system for automotive vehicle devices |
| US4970494 | 20 Nov 1989 | 13 Nov 1990 | | Radio controlled home security system |
| US4973958 | 21 Feb 1986 | 27 Nov 1990 | Nissan Motor Company, Limited | Keyless entry system for automotive devices antenna device allowing low power radio signal communication |
| US5111199 | 26 Jun 1990 | 5 May 1992 | Nissan Motor Company, Limited | Pocket-portable radio code signal transmitter for automotive keyless entry system |
| US5113182 | 19 Jan 1990 | 12 May 1992 | Prince Corporation | Vehicle door locking system detecting that all doors are closed |
| US5231364 | 24 Jun 1992 | 27 Jul 1993 | Nokia Mobile Phones, Ltd. | Phaseshift network for an IQ modulator |
| US5245317 | 18 Dec 1991 | 14 Sep 1993 | | Article theft detection apparatus |
| US5266783 | 13 May 1991 | 30 Nov 1993 | First Tracks | Identification system requiring momentary contact by limb-worn ID unit with reader detector array |
| US5278547 | 6 Sep 1991 | 11 Jan 1994 | Prince Corporation | Vehicle systems control with vehicle options programming |
| US5315289 | 12 Feb 1992 | 24 May 1994 | | Anticipatory interactive protective system |
| US5339074 | 13 Sep 1991 | 16 Aug 1994 | Fluoroware, Inc. | Very low frequency tracking system |
| US5389772 | 17 Aug 1993 | 14 Feb 1995 | | Two-dimensional plural contact array for heading an ID unit |
| US5446265 | 17 Aug 1993 | 29 Aug 1995 | First Tracks, Inc. | Personal identification, access control and monitoring system |
| US5455716 | 10 Dec 1992 | 3 Oct 1995 | Prince Corporation | Vehicle mirror with electrical accessories |
| US5471203 | 1 Feb 1995 | 28 Nov 1995 | Fujitsu Limited | Admission managing system |
| US5512887 | 22 Jan 1993 | 30 Apr 1996 | First Tracks | Personal identification, access control and monitoring system |
| US5523739 | 4 May 1995 | 4 Jun 1996 | | Metal detector for control of access combined in an integrated form with a transponder detector |
| US5541585 | 11 Oct 1994 | 30 Jul 1996 | Stanley Home Automation | Security system for controlling building access |
| US5583485 | 5 Jun 1995 | 10 Dec 1996 | Prince Corporation | Trainable transmitter and receiver |
| US5583486 | 1 Dec 1994 | 10 Dec 1996 | Monaad Corporation Pty Limited | Security access arrangement |
| US5614885 | 14 Aug 1990 | 25 Mar 1997 | Prince Corporation | Electrical control system for vehicle options |
| US5661455 | 31 Jan 1995 | 26 Aug 1997 | Prince Corporation | Electrical control system for vehicle options |
| US5691848 | 31 Jan 1995 | 25 Nov 1997 | Prince Corporation | Electrical control system for vehicle options |
| US5699044 | 31 Jan 1995 | 16 Dec 1997 | Prince Corporation | Electrical control system for vehicle options |
| US5708415 | 14 Nov 1996 | 13 Jan 1998 | Prince Corporation | Electrical control system for vehicle options |
| US5959530 | 29 Jul 1998 | 28 Sep 1999 | Xerox Corporation | Remote computer security system for computers, printers and multifunction devices |
| US6037870 | 23 Feb 1999 | 14 Mar 2000 | | Dector system for access control, and a detector assembly for implementing such a system |
| US6057764 | 20 Aug 1998 | 2 May 2000 | | Dynamically bypassed alarm system |
| US6211790 | 19 May 1999 | 3 Apr 2001 | ELPAS North America, Inc. | Infant and parent matching and security system and method of matching infant and parent |
| US6414597 | 21 Jun 1996 | 2 Jul 2002 | Avid Marketing, Inc. | Electronic identification system extended-range reader |
| US6429782 | 5 Apr 1999 | 6 Aug 2002 | Robert Bosch GmbH | Detection system and switch device |
| US6448894 | 13 Sep 2000 | 10 Sep 2002 | Siemens Automotive Corporation | Passive actuation of home security system |
| US6577226 | 27 Apr 1999 | 10 Jun 2003 | TRW Inc. | System and method for automatic vehicle unlock initiated via beam interruption |
| US6720874 | 28 Sep 2001 | 13 Apr 2004 | IDS Systems, Inc. | Portal intrusion detection apparatus and method |
| US6753781 | 8 Mar 2001 | 22 Jun 2004 | Elpas North America, Inc. | Infant and parent matching and security system and method of matching infant and parent |
| US6774782 | 23 Sep 2002 | 10 Aug 2004 | Battelle Memorial Institute | Radio frequency personnel alerting security system and method |
| US7005990 | 3 Jul 2003 | 28 Feb 2006 | | Motion detector and adapter therefor |
| US7064651 | 12 Apr 2001 | 20 Jun 2006 | | Automatic vehicle theft prevention system |
| US7330114 | 12 Feb 2004 | 12 Feb 2008 | Aleis Trakit Pty Ltd. | Electronic security and monitoring system |
| USRE29610 | 7 May 1975 | 11 Apr 1978 | Knogo Corporation | Field strength uniformity control system |
| USRE33873 | 3 Jul 1990 | 7 Apr 1992 | | Microcomputer controlled combination lock security system |
