YOSEMITE INVESTMENTS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 391

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6987445 Water resistant audible signalSep 22, 00Jan 17, 06[G08B]
6512450 Extra loud low frequency acoustical alarm assemblyJan 20, 00Jan 28, 03[G08B]
RE30620 High output smoke and heat detector alarm system utilizing a piezoelectric transducer and a voltage doubling meansJul 03, 78May 19, 81[G08B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4935909 Piezoelectric signaling deviceExpiredDec 10, 86Jun 19, 90[H04R]
4697932 Multi-signal alarmExpiredDec 11, 85Oct 06, 87[G04C]
4679119 Dielectric fluid for electrical capacitorsExpiredJun 13, 86Jul 07, 87[H01G]
4664883 Method of making electrolytic capacitor anodesExpiredJun 17, 86May 12, 87[B22F]
4642731 Dielectric fluid for a capacitorExpiredJun 16, 86Feb 10, 87[H01G]
4626799 Warble signaling deviceExpiredSep 23, 85Dec 02, 86[H03K, G08B, H03B]
4626959 Dielectric fluid for metallized capacitorsExpiredSep 04, 84Dec 02, 86[H01G]
4621301 Dielectric fluid for a capacitorExpiredOct 31, 85Nov 04, 86[H01G]
4609967 Dielectric fluid for a capacitorExpiredOct 15, 85Sep 02, 86[H01G]
4609969 Dielectric fluid for metallized polypropylene film capacitorsExpiredOct 22, 84Sep 02, 86[H01G]
4604606 Audio signalling deviceExpiredAug 08, 85Aug 05, 86[G08B, H01L]
4581496 Diaphragm for attenuating harmonic response in an electroacoustic transducerExpiredSep 04, 79Apr 08, 86[H04R]
4558305 Multiple tone signaling deviceExpiredDec 20, 82Dec 10, 85[G08B]
4521826 Dielectric fluid for a compacitorExpiredFeb 25, 80Jun 04, 85[H01G]
4498117 Dielectric fluidExpiredNov 25, 83Feb 05, 85[B05D, H01G]
4486809 Anchoring means for a capacitorExpiredJul 30, 82Dec 04, 84[H01G]
4476516 Dielectric fluid for electrical capacitorsExpiredOct 24, 83Oct 09, 84[H01G]
4466841 Cathode electrode for an electrical device and method of making sameExpiredSep 19, 83Aug 21, 84[H01G]
4459637 Dielectric fluid for a capacitorExpiredMay 31, 83Jul 10, 84[H01G]
4456945 CapacitorExpiredJul 01, 82Jun 26, 84[H01G]

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