Inventor

ISHIZUKA KAZUNORI

JP66 patents

⚠️ This page may combine multiple inventors who share the name “ISHIZUKA KAZUNORI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PENTAX CORP

24 patents

US7338219B2Mar 4, 2008

Retractable lens system and a camera incorporating the retractable lens system

PENTAX CORP20 citations93

US7265913B2Sep 4, 2007

Movable lens control device

PENTAX CORP16 citations93

US6522482B2Feb 18, 2003

Zoom lens barrel assembly

PENTAX CORP40 citations92

US6522481B2Feb 18, 2003

Cam structure for zoom lens barrel assembly

PENTAX CORP35 citations92

US6522478B2Feb 18, 2003

Multi-stage-extension zoom lens barrel assembly

PENTAX CORP37 citations92

US7230773B2Jun 12, 2007

Drive mechanism of a zoom lens

PENTAX CORP12 citations84

US6853503B2Feb 8, 2005

Eccentricity-prevention mechanism for a pair of lens-supporting rings

PENTAX CORP17 citations84

US6778334B2Aug 17, 2004

Lens barrel

PENTAX CORP14 citations84

US6751032B2Jun 15, 2004

Lens barrel

PENTAX CORP15 citations84

US6809884B2Oct 26, 2004

Zoom lens barrel assembly

PENTAX CORP9 citations74

US6741401B2May 25, 2004

Lens barrel

PENTAX CORP7 citations74

US6721111B2Apr 13, 2004

Lens guide mechanism

PENTAX CORP8 citations74

US6714362B2Mar 30, 2004

Lens shutter mechanism

PENTAX CORP10 citations74

US6661970B2Dec 9, 2003

Lens barrel

PENTAX CORP11 citations74

US6657793B2Dec 2, 2003

Lens barrel

PENTAX CORP8 citations74

US6891668B2May 10, 2005

Lens barrel

PENTAX CORP2 citations63

US6850701B2Feb 1, 2005

Camera having lens barrier

PENTAX CORP3 citations63

US6799906B2Oct 5, 2004

Light intercepting member driving mechanism

PENTAX CORP2 citations63

US6798582B2Sep 28, 2004

Reduction gear mechanism

PENTAX CORP2 citations63

US6795251B2Sep 21, 2004

Lens drive mechanism

PENTAX CORP5 citations63

US6717744B2Apr 6, 2004

Lens barrel

PENTAX CORP3 citations63

US6687459B2Feb 3, 2004

FPC mounting structure

PENTAX CORP6 citations63

US6680804B2Jan 20, 2004

Zoom lens mechanism

PENTAX CORP2 citations63

US6661586B2Dec 9, 2003

Ring member shift mechanism and lens group shift mechanism

PENTAX CORP2 citations63

HOYA CORP

12 patents

US7860383B2Dec 28, 2010

Imaging device

HOYA CORP14 citations84

US7780362B2Aug 24, 2010

Retracting mechanism of a lens barrel

HOYA CORP13 citations84

US7777976B2Aug 17, 2010

Imaging device

HOYA CORP14 citations84

US7773871B2Aug 10, 2010

Retractable photographic lens

HOYA CORP16 citations84

US7546029B2Jun 9, 2009

Retractable lens system

HOYA CORP12 citations84

US7507040B2Mar 24, 2009

Retractable lens system

HOYA CORP15 citations84

US7492536B2Feb 17, 2009

Movable lens control device

HOYA CORP12 citations84

US7408722B2Aug 5, 2008

Cam mechanism of a zoom lens

HOYA CORP12 citations84

US7753598B2Jul 13, 2010

Lens barrel

HOYA CORP13 citations82

US7872810B2Jan 18, 2011

Light shielding structure of an optical device

HOYA CORP4 citations63

US7835088B2Nov 16, 2010

Light shielding structure of an optical device

HOYA CORP3 citations63

US7499637B2Mar 3, 2009

Cam mechanism of a zoom lens

HOYA CORP4 citations63

ASAHI OPTICAL CO LTD

11 patents

US6055116AApr 25, 2000

Multi-stage extension type zoom lens barrel

ASAHI OPTICAL CO LTD84 citations96

US6369962B1Apr 9, 2002

Zoom lens barrel

ASAHI OPTICAL CO LTD23 citations93

US6269227B1Jul 31, 2001

Lens hood

ASAHI OPTICAL CO LTD28 citations93

US6014269AJan 11, 2000

Engaging structure of relatively-rotatable cylindrical members

ASAHI OPTICAL CO LTD30 citations93

US6115189ASep 5, 2000

Multi-stage extension type zoom lens barrel

ASAHI OPTICAL CO LTD19 citations84

US6392828B1May 21, 2002

Zoom lens barrel

ASAHI OPTICAL CO LTD12 citations74

US6369956B1Apr 9, 2002

Zoom lens barrel

ASAHI OPTICAL CO LTD11 citations74

US6130788AOct 10, 2000

Structure for holding lens

ASAHI OPTICAL CO LTD8 citations74

US5956189ASep 21, 1999

Linear guiding mechanism of a zoom lens barrel

ASAHI OPTICAL CO LTD15 citations74

US5950019ASep 7, 1999

Zoom lens camera

ASAHI OPTICAL CO LTD8 citations74

US6335834B1Jan 1, 2002

Barrel having cam groove and helicoid

ASAHI OPTICAL CO LTD5 citations63

FUJITSU LTD

1 patent

US6855026B2Feb 15, 2005

Method for forming partitions of plasma display panel by using sandblasting process

FUJITSU LTD13 citations92

FUJI PHOTO OPTICAL CO LTD

1 patent

US6835006B2Dec 28, 2004

Lens barrel and camera

FUJI PHOTO OPTICAL CO LTD35 citations92

FUJITSU HITACHI PLASMA DISPLAY

1 patent

USRE42405EMay 31, 2011

Method for forming partitions of plasma display panel by using sandblasting process

FUJITSU HITACHI PLASMA DISPLAY4 citations73

Showing the top 50 of 66 patents by PatentIndex Score.