Sigma Corporation

Japan


Create a watch for Sigma Corporation
Total IP 68
Total IP incl. subs 72 (+ 4 for subs)
Total IP Rank # 20,492
IP Activity Score 2.5/5.0    38
IP Activity Rank # 19,681
Parent Entity Sigma International Group, Inc
Dominant Nice Class Scientific and electric apparatu...

Patents

Trademarks

48 9
0 4
0 0
7
 
Last Patent 2026 - Imaging optical system
First Patent 1979 - Appliance for adhering a sensing...
Last Trademark 2025 - CONTEMPORARY
First Trademark 1971 - SIGMA

Subsidiaries

2 subsidiaries with IP (3 patents, 1 trademarks)

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Industry (Nice Classification)

Latest Inventions, Goods, Services

2025 Invention Imaging optical system. Provided is an imaging optical system that is compatible with a large im...
G/S Optical machines and apparatus, namely, loupes, interchangeable lenses for cameras and interchang...
Invention Variable magnification optical system. A variable magnification optical system that is relativel...
Invention Variable magnification optical system and imaging apparatus. A variable magnification optical sy...
Invention Optical system. An optical system that achieves weight reduction while correcting various aberra...
G/S Optical lenses; camera lenses; interchangeable lenses for cameras; lenses for digital cameras; in...
G/S Lenses; optical lenses; camera lenses; interchangeable lenses for cameras; lenses for digital cam...
Invention Imaging optical system. An imaging optical system includes, in order from an object side to an i...
Invention Imaging optical system. An imaging optical system is suitable for a telephoto lens having a larg...
G/S Lenses; Optical lenses; Optical apparatus and instruments; Cinematographic cameras; Camera lenses...
G/S Interchangeable lenses for cameras; lenses for digital cameras; interchangeable lenses for digita...
Invention High power zoom lens. A high power zoom lens including, in order from an object side: a first le...
Invention Zoom lens. Provided is a zoom lens that has a large aperture ratio, has a suppressed total lengt...
2024 Invention Large aperture ratio ultra wide angle lens. A large aperture ratio ultra wide angle lens is comp...
Invention Imaging optical system. An object of the present invention is to provide an imaging optical syst...
Invention Telephoto zoom lens. A telephoto zoom lens according to the present invention includes: a first ...
Invention Imaging optical system. It is aimed at providing an imaging optical system which is small-sized ...
Invention Large aperture ratio telephoto zoom lens. Disclosed is a large aperture ratio telephoto zoom len...
Invention Optical system. The optical system is configured to include a first lens group G1, a second lens...
2023 Invention Optical system. To provide an optical system that achieves a reduction in weight while correctin...
2022 Invention Imaging optical system. An imaging optical system includes: sequentially from an object side, a f...
2021 G/S Photographic image sensors; optical sensors; computer hardware; electronic integrated circuits; e...
G/S Photographic Image Sensors
2020 Invention Pipelined row decoder topology for faster imager row decoding. An imaging array includes a plural...
Invention Sub-sampled color channel readout wiring for vertical detector pixel sensors. In an array of mult...
2019 Invention Combined programmable gain amplifier and comparator for low power and low area readout in image s...
2018 Invention Imaging arrays having focal plane phase detecting pixel sensors. A focal plane phase detect pixel...
Invention Imaging array having improved surface-to-detector light transmission. A pixel sensor array includ...
Invention Sub-sampled color channel readout wiring for vertical detector pixel sensors. In an array contain...
Invention Electronically controlled graduated density filters in stacked image sensors. A method for perfor...
2017 Invention Method for recovering highlights and saturated regions and extending dynamic range in a digital i...
Invention Column line clamp circuit for imaging array. In an imaging array having a plurality of pixel sens...
2016 Invention Electronically controlled graduated density filters in stacked image sensors. In a digital camera...
2015 Invention Imaging array having photodiodes with different light sensitivities and associated image restorat...
2014 Invention Methods for reducing row and column patterns in a digital image. A method for performing column/r...
Invention Method for processing highlights and saturated regions in a digital image. A method for performin...
2012 Invention Method of adjusting the brightness of a digital camera image. A method for adjusting the brightne...
Invention Methods for suppressing structured noise in a digital image. A method for suppressing structured ...
Invention Methods for digital image sharpening with noise amplification avoidance. A method for sharpening ...
Invention Denoising images with a color matrix pyramid. A method for chroma denoising a digital image creat...
2010 Invention Correcting defective pixels in digital color images. A method for replacing defective pixels in a...
Invention Cmos pixel sensor with depleted photocollectors and a depleted common node. An active pixel senso...
Invention Method for detecting pixel outliers. A method for identifying singleton outlier pixels in a selec...
Invention Unit element ramp generator for analog-to-digital converter. A method for generating a ramp compr...
2009 Invention Method and apparatus for improving sensitivity in vertical color cmos image sensors. The inventio...
2008 Invention Multi-color cmos pixel sensor with shared row wiring and dual output lines. An array of multicolo...
Invention Photodiode with improved charge capacity. A method for forming a photodiode cathode in an integra...
2007 Invention High-gain multicolor pixel sensor with reset noise cancellation. An active CMOS pixel sensor incl...
Invention Pinned photodiode cmos pixel sensor. A multicolor CMOS pixel sensor formed in a p-type semiconduc...
2005 Invention Multi-colour sensitive device for color image sensing. A sensor element (1, 20, 21, 22) capable ...
2004 Invention Intra-pixel fixed-pattern-noise cancellation circuit and method. A pixel sensor comprises a first...
2003 Invention Camera exposure indication interface. Systems and methods of providing spatially dependent image ...
2000 G/S Close-up lenses, lenses namely, lenses for cameras, lens converters for cameras, flash lighting u...
1999 G/S Cameras; electronic cameras and imaging systems; digital cameras; parts and fittings for all the ...
1996 G/S Equipment for photography, including cameras, lenses for photography, lens adapters, intermediate...
1993 G/S cameras and flash lighting units
1977 G/S Cameras and camera lenses.
1971 G/S PHOTOGRAPHIC LENSES AND LENS ADAPTORS