Lens patents

English translations of Japanese patents can be found at Japan platform for patent information [[1]]. Note that the English interface provides translation and Japanese images, but does not have option to give OCR-ed Japanese text, use Japanese interface to get it [[2]]. Nor does the site allow direct linking to pages.

publication	type		filed	published	companies	authors	link given by
JP 2016-126295	DSLR FF	Tamron 100-400mm F4.5-6.3 VC	2015.1.8	2016.7.11	Tamron Co., Ltd.	Katsuhiro Yoshimura, Hiroko Negishi, Yoshito Iwasawa, Jun Takahashi	http://thenewcamera.com/tamron-100-400mm-f4-5-6-3-vc-patent/
JP 2016-118658	MILC APS-C	Canon EF-M 15-45/3.5-6.3 STM	2014.12.22	2016.6.30	Canon Inc.	Yukio Takanashi (高梨 幸雄), Takashi Inoue (井上 卓)	http://egami.blog.so-net.ne.jp/2016-07-06
JP 2015-68910	MILC FF	Sony FE 55/1.8 ("sony zeiss")	2013.9.27	2015.4.13	Sony Corporation	Chen Yonghua (陳 永華), Naomi Miyagawa (宮川 直己)
JP 2015-41012	MILC FF	Sony FE 35/2.8 ("sony zeiss")
JP 2013-37105		Sony E 55-210/4.5-6.3	2011.8.5	2013.2.21	Sony Corporation	特許業務法人つばさ国際特許事務所, Michiki Maruyama (丸山 理樹)
JP 2015-121649	MILC FF	Zeiss Batis 25/2
JP 2015-96915	MILC FF	Zeiss Batis 85/1.8
JP 2015-18124	MILC FF	Sony FE 28-320/3.5-6.3
JP 2012-242690	MILC APS-C	Sony E 50/1.8
JP 2013-161076	micro 4/3"	Olympus M.Zuiko 75/1.8			Sigma
US20130064532		Speed Booster				J. Brian Caldwell, Wilfried Bittner
US8903232		Speed Booster Ultra
JP 2016-31419	fixed 1"	PowerShot G3X	28.07.2014	07.03.2016	CANON INC	MOGI SHUICHI
JP 2016-161889	fixed 1"	Powershot G9X
RU 2290675 [[3]] [[4]]	FF SLR	Zenitar 50 f/2 MC	29.06.2005	27.12.2006	KMZ	Byshkin Sergei (Бышкин Сергей Борисович), Kushnaryov Konstantin (Кушнарев Константин Геннадьевич), Strakhov Vyacheslav (Страхов Вячеслав Викторович), Shcheglov Sergei (Щеглов Сергей Иванович), Levitsky Pyotr (Левицкий Петр Тадейович)
JP-A 2016-139087	APS-C fixed	Sigma DP0 Quattro	2015.1.29	2016.8.4	Sigma	Kono Horai (幸野 朋来), Ogasawara Noriyuki(小笠原 典行)
JP-A 2015-161792	APS-C MILC	Zeiss Touit 50/2.8 Macro	2014.02.27	2015.09.07	FUJIFILM Corporation, Carl Zeiss AG	Yanagida Masashi 柳田 征史, Tsuyoshi Sakuma 佐久間 剛, Tomioka Ryoko 富岡 領子, Hiroki Saito 斉藤 広樹, Aurelien Dodokku, Michael Pollmann, Eugene Klein
JP-A 2014-219587	APS-C MILC	Fujifilm XF 27/2.8
JP-A 2013-44964	APS-C MILC	Sony E 10-18/4 OSS
JP-A 2016-99362	4/3" MILC	Olympus M.Zuiko 30/3.5 macro	2014.11.18	2016.5.30

Patented, not produced

publication	type		filed	published	companies	authors
JP-A 2016-102852	FF SLR	Canon 800,1000,600 f/5.6 DO	27.11.2014	02.06.2016	CANON INC	SATO ARATA, YOKOYAMA TAKAYOSHI	}