Inventor
David Llewellyn
Inventor
Duluth, GA, US
Overview
Patents· 66 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
LOC21primary
LOC2170%
A63BApparatus for physical training, gymnastics, swimming, climbing, or fencing30%
PatentTitleYear
10,926,141Wave sole for a golf club head202110,245,488Vibration damping bat and methods of making the same201910,159,880Adjustable metal wood golf club head with moveable weight structure20189,597,563'Multi-track adjustable golf club'20179,333,399'Adjustable golf club'2016D0736872'Iron-type golf club head'2015D0736875'Iron-type golf club head'2015D0720417'Iron-type golf club head'2014D0720416'Iron-type golf club head'2014D0720026'Iron-type golf club head'2014D0682961'Iron-type golf club head'2013D0682962'Iron-type golf club head'2013D0669546'Wood-type golf club'2012D0664621'Iron-type golf club'2012D0660390'Iron-type golf club'2012D0659780'Iron-type golf club'2012D0650877'Iron-type golf club head'2011D0650878'Iron-type golf club head'2011D0650876'Hybrid-type golf club head'20118,021,246'Iron golf club heads and golf club sets with variable weight distribution'2011D0645103'Iron-type golf club'20118,016,694'Golf club head and golf clubs'2011D0641817'Wood-type golf club head'2011D0641821'Iron-type golf club head'2011D0641444'Iron-type golf club head'20117,972,222'Iron golf club heads and golf club sets with variable weight distribution'2011D0639363'Wood-type golf club'2011D0629061'Iron-type golf club'2010D0620063'Back design for hybrid golf club heads'20107,758,440'Wood-type golf club heads and methods of adjusting the same'2010D0619184'Back design for iron golf club heads'2010D0619183'Back design for iron golf club heads'2010D0618295'Fairway wood-type golf club head'2010D0617859'Hybrid golf club head'2010D0617858'Driver-type golf club head'2010D0617403'Driver-type golf club head'2010D0611554'Back design for an iron golf club head'2010D0606606'Back design for an iron golf club head'2009D0603923'Back design for an iron golf club head'20097,611,424'Golf club head and golf club'2009D0600766'Back design for an iron golf club head'2009D0600765'Back design for an iron golf club head'20097,517,286'Trial golf club for measuring loft angle and methods for using the same'2009D0579507'Crown for a hybrid golf club'2008D0564611'Golf club wood head'2008D0561284'Golf club wood head'2008D0561285'Back design for a golf club iron head'2008D0550796'Lower back portion of a golf iron'2007D0550316'Recessed back portion of a golf iron'2007D0549295'Recessed back portion of a golf iron'20077,126,339'Utility iron golf club with weighting element'2006D0529974'Back design for a golf club iron head'2006D0521095'Back design for a golf club iron head'20067,022,028'Iron golf club and golf club set with variable weight distribution'20066,855,069'Game improvement golf club using hollow technology'20056,843,733'Cavity back golf club having a multi-tiered weight distribution configuration'20056,793,587'Trial golf club, golf club fitting system and methods of using the same'2004D0473904'Recessed back of a golf club head'2003D0466961'Back of a golf club head'2002D0466576'Rear inset of a golf club head'2002D0461865'Sole for a golf club wood'20026,416,422'Golf club head with bounce channel'2002D0449086'Recessed back portion of a golf club head'2001D0446567'Sole portion for a golf club head'2001D0428635'Recessed back portion of a golf club head'2000D0428634'Recessed back portion of a golf club head'2000Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2000–2021Patents assigned to MIZUNO KK (18)· patent assignee history
2000–2019Based in Norcross, GA, US· patent location history
2001–2017Patents assigned to MIZUNO USA INC (34)· patent assignee history
2002–2021Based in Duluth, GA, US· patent location history
2007–2012Patents assigned to MIZUNO USA (14)· patent assignee history
2011–2013Patents assigned to LLEWELLYN DAVID (9)· patent assignee history
2011–2012Patents assigned to SAKAMOTO TSUGUNOBU (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MIZUNO USA INC | 34 | 2001–2017 |
| MIZUNO KK | 18 | 2000–2021 |
| MIZUNO USA | 14 | 2007–2012 |
| LLEWELLYN DAVIDself | 9 | 2011–2013 |
| SAKAMOTO TSUGUNOBU | 3 | 2011–2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Duluth, Georgia, US | 58 | 2002–2021 |
| Norcross, Georgia, US | 8 | 2000–2019 |