Inventor · disambiguated record
David F. Hofstatter
Also filed as: HOFSTATTER DAVID F · HOFSTATTER DAVID FRANK
40 granted patents·1 pending application·1,573 citations·filing 2000–2016
98Inventor score
Files withCALLWAVE COMMUNICATIONS LLC16CALLWAVE INC9DOLAN ROBERT A4KIRCHHOFF LELAND W4TRANDAL DAVID S4
Top patents by PatentIndex Score
41 records- 0199US7822188B1Methods and apparatus for providing expanded telecommunications serviceCALLWAVE INC·Filed 2006·Granted Oct 26, 2010·163 cites·57 claims
- 0299US6477246B1Method and apparatus for providing expanded telecommunications serviceCALLWAVE INC·Filed 2000·Granted Nov 5, 2002·320 cites·36 claims
- 0398US7555110B2Methods and apparatus for providing expanded telecommunications serviceCALLWAVE INC·Filed 2005·Granted Jun 30, 2009·194 cites·60 claims
- 0498US6898275B2Method and apparatus for providing expanded telecommunications serviceCALLWAVE INC·Filed 2002·Granted May 24, 2005·212 cites·21 claims
- 0596US9277043B1Methods and systems for managing telecommunications and for translating voice messages to text messagesCALLWAVE COMMUNICATIONS LLC·Filed 2015·Granted Mar 1, 2016·26 cites·20 claims
- 0696US8548447B1Methods and systems for blocking unwanted telecommunicationsKIRCHHOFF LELAND W·Filed 2007·Granted Oct 1, 2013·33 cites·16 claims
- 0796US7397910B2Method and apparatus for providing expanded telecommunications serviceCALLWAVE INC·Filed 2005·Granted Jul 8, 2008·43 cites·46 claims
- 0895US9647978B2Methods and apparatus for providing expanded telecommunications serviceCALLWAVE COMMUNICATIONS LLC·Filed 2016·Granted May 9, 2017·14 cites·43 claims
- 0995US9319523B2Methods and apparatus for providing expanded telecommunications serviceCALLWAVE COMMUNICATIONS LLC·Filed 2014·Granted Apr 19, 2016·18 cites·22 claims
- 1095US8214338B1Methods and systems for media storageKIRCHHOFF LELAND W·Filed 2008·Granted Jul 3, 2012·49 cites·30 claims
- 1195US8000455B1Methods and systems for call processingCALLWAVE INC·Filed 2006·Granted Aug 16, 2011·52 cites·68 claims
- 1294US8774785B1Methods and systems for blocking unwanted communicationsCALLWAVE COMMUNICATIONS LLC·Filed 2013·Granted Jul 8, 2014·17 cites·16 claims
- 1394US8447285B1Methods and systems for managing telecommunications and for translating voice messages to text messagesBLADON ANTHONY·Filed 2008·Granted May 21, 2013·99 cites·27 claims
- 1494US7869076B1Facsimile telecommunications system and methodJ2 GLOBAL COMMUNICATIONS INC·Filed 2009·Granted Jan 11, 2011·17 cites·19 claims
- 1594US7688958B2Methods and apparatus for providing expanded telecommunications serviceCALLWAVE INC·Filed 2005·Granted Mar 30, 2010·70 cites·59 claims
- 1693US9838542B1Methods and systems for managing communicationsCALLWAVE COMMUNICATIONS LLC·Filed 2016·Granted Dec 5, 2017·10 cites·23 claims
- 1793US9413885B1Methods and systems for blocking unwanted communicationsCALLWAVE COMMUNICATIONS LLC·Filed 2015·Granted Aug 9, 2016·10 cites·14 claims
- 1893US8325901B1Methods and apparatus for providing expanded telecommunications serviceDOLAN ROBERT A·Filed 2009·Granted Dec 4, 2012·29 cites·27 claims
- 1993US7480065B1Facsimile telecommunications system and methodCALLWAVE INC·Filed 2004·Granted Jan 20, 2009·46 cites·50 claims
- 2092US8977248B1Methods and systems for managing telecommunications and for translating voice messages to text messagesCALLWAVE COMMUNICATIONS LLC·Filed 2014·Granted Mar 10, 2015·20 cites·25 claims
- 2192US8351591B2Methods and apparatus for providing expanded telecommunications serviceCALLWAVE COMM LLC·Filed 2010·Granted Jan 8, 2013·19 cites·17 claims
- 2292US8325886B1Methods and systems for managing telecommunicationsKIRCHHOFF LELAND W·Filed 2008·Granted Dec 4, 2012·18 cites·15 claims
- 2389US9692891B1Methods and systems for blocking unwanted communicationsCALLWAVE COMMUNICATIONS LLC·Filed 2016·Granted Jun 27, 2017·6 cites·20 claims
- 2489US8891753B2Methods and apparatus for providing expanded telecommunications serviceCALLWAVE COMMUNICATIONS LLC·Filed 2013·Granted Nov 18, 2014·8 cites·20 claims
- 2589US8688092B1Methods and systems for managing telecommunications and for translating voice messages to text messagesCALLWAVE COMMUNICATIONS LLC·Filed 2013·Granted Apr 1, 2014·12 cites·20 claims
- 2687US8400664B2Facsimile telecommunications system and methodTRANDAL DAVID S·Filed 2011·Granted Mar 19, 2013·5 cites·9 claims
- 2787US8081337B2Facsimile telecommunications system and methodTRANDAL DAVID S·Filed 2011·Granted Dec 20, 2011·5 cites·24 claims
- 2886US8526582B1Methods and systems for managing telecommunicationsKIRCHHOFF LELAND W·Filed 2012·Granted Sep 3, 2013·6 cites·20 claims
- 2983US9686414B1Methods and systems for managing telecommunications and for translating voice messages to text messagesCALLWAVE COMMUNICATIONS LLC·Filed 2016·Granted Jun 20, 2017·4 cites·22 claims
- 3083US8472592B1Methods and systems for call processingVAN HAAFTEN ADRIAN·Filed 2011·Granted Jun 25, 2013·9 cites·23 claims
- 3183US7742586B1Enhanced service levels for call-processing servicesCALLWAVE INC·Filed 2004·Granted Jun 22, 2010·26 cites·33 claims
- 3281US8594287B2Methods and apparatus for providing expanded telecommunications serviceDOLAN ROBERT A·Filed 2010·Granted Nov 26, 2013·7 cites·30 claims
- 3377US8958782B1Methods and systems for blocking unwanted communicationsCALLWAVE COMMUNICATIONS LLC·Filed 2014·Granted Feb 17, 2015·2 cites·20 claims
- 3475US9491297B1Methods and systems for managing telecommunicationsCALLWAVE COMMUNICATIONS LLC·Filed 2013·Granted Nov 8, 2016·2 cites·16 claims
- 3569US9258412B1Enhanced service levels for call-processing servicesCALLWAVE COMMUNICATIONS LLC·Filed 2014·Granted Feb 9, 2016·1 cites·27 claims
- 3664US8750469B1Methods and systems for call processingCALLWAVE COMMUNICATIONS LLC·Filed 2013·Granted Jun 10, 2014·1 cites·23 claims
- 3760US8929258B1Enhanced service levels for call-processing servicesCALLWAVE COMMUNICATIONS LLC·Filed 2014·Granted Jan 6, 2015·0 cites·27 claims
- 3859US8401164B1Methods and apparatus for providing expanded telecommunications serviceDOLAN ROBERT A·Filed 2008·Granted Mar 19, 2013·0 cites·8 claims
- 3953US8670536B1Enhanced service levels for call-processing servicesTRANDAL DAVID S·Filed 2012·Granted Mar 11, 2014·0 cites·20 claims
- 4051US8165278B2Enhanced service levels for call-processing servicesTRANDAL DAVID S·Filed 2010·Granted Apr 24, 2012·0 cites·30 claims
- 4143US2013343205A1Methods and apparatus for providing expanded telecommunications serviceDOLAN ROBERT A·Filed 2012·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →