Ishikawa has a total of 46 patents globally, out of which 40 have been granted. Of these 46 patents, 56% patents are active. Japan is where Ishikawa has filed the maximum number of patents, followed by United States of America. Parallelly, Japan seems to be the main focused R&D centre and also is the origin country of Ishikawa.
Ishikawa was founded in 1947. Ishikawa is a Japanese company that focuses on building quality homes and providing construction services. It has extensive experience in creating affordable and durable housing. The company aims to improve people’s lifestyles by offering well-designed and comfortable homes. With a strong focus on customer satisfaction, Ishikawa is a trusted name in Japan’s housing industry.
Do read about some of the most popular patents of Ishikawa which have been covered by us in this article and also you can find Ishikawa patents information, the worldwide patent filing activity and its patent filing trend over the years, and many other stats over Ishikawa patent portfolio.
How many patents does Ishikawa have?
Ishikawa has a total of 46 patents globally. These patents belong to 45 unique patent families. Out of 46 patents, 26 patents are active.
How Many Patents did Ishikawa File Every Year?
Are you wondering why there is a drop in patent filing for the last two years? It is because a patent application can take up to 18 months to get published. Certainly, it doesn’t suggest a decrease in the patent filing.
| Year of Patents Filing or Grant | Ishikawa Applications Filed | Ishikawa Patents Granted |
| 2026 | – | 1 |
| 2025 | 2 | 1 |
| 2024 | 1 | 1 |
| 2023 | – | 2 |
| 2022 | – | 2 |
| 2021 | 1 | – |
| 2020 | 1 | – |
| 2019 | 3 | – |
| 2018 | 2 | 2 |
| 2017 | 1 | 1 |
How many Ishikawa patents are Alive/Dead?
Worldwide Patents
How Many Patents did Ishikawa File in Different Countries?
Countries in which Ishikawa Filed Patents
| Country | Patents |
| Japan | 41 |
| United States of America | 4 |
Where are Research Centers of Ishikawa Patents Located?
The Research Centers of Ishikawa Patents is Japan.
Best Ishikawa Patents
JP3769211B2 is the most popular patent in the Ishikawa portfolio. It has received 229 citations so far from company like Lizhao.
Below is the list of most cited patents of Ishikawa:
| Publication Number | Citation Count |
| JP3769211B2 | 11 |
| JP5911311B2 | 4 |
| JP4076044B2 | 4 |
| JP5500590B2 | 2 |
| US8252311B2 | 2 |
| JP2019156487A | 1 |
| WO2009133694A1 | 1 |
List of Ishikawa patents
| Ishikawa Patents | Title |
| US12535084B2 | Cover Board Attachable To Ceiling Fan |
| JP7656272B2 | Paper Bags And Their Manufacturing Method |
| US20250290654A1 | Vertical Duct For Building Air Conditioning System |
| JP7429914B2 | Paper Bag And Method For Manufacturing The Same |
| JP7368820B2 | Multilayer Paper Bag Manufacturing Method And Multilayer Paper Bag Manufactured By The Same |
| JP7299638B2 | Paper Bags For Powders And Granules |
| JP7113499B2 | Multi-Layer Paper Bag That Prevents Contents From Leaking |
| JP7072181B2 | Easy-To-Open Multi-Layer Paper Bag |
| JP2021098542A5 | Sealing Method Of Multilayer Paper Bag Opening Side And Temperature Adjustment Device For Adhesive Used For Sealing |
| JP2021160805A | Multilayer Paper Bag |
| JP2019156487A | Opening Mechanism For Paper Bag |
| JP6380947B2 | Moisture-Proof Multi-Layer Bag That Is Easy To Open |
| JP6323944B2 | Breathable Multi-Layer Paper Bag That Is Easy To Open |
| JP6061376B2 | Easy-To-Open Bag Manufacturing Method And Easy-To-Open Bag Obtained Thereby |
| JP5995261B2 | Paper Bag With Outer Valve |
| JP5930632B2 | Moisture-Proof Bag With Degassing Structure |
| JP5911311B2 | Moisture-Proof Bag For Easy Deaeration |
| JP5773799B2 | Composite Bag Using Composite Sheet |
| JP5769539B2 | Easy-To-Mouth Bag |
| JP5757849B2 | Easy-To-Open Bag |
| JP5709689B2 | Fall-Resistant Bag Composite Bag With Excellent Impact Resistance |
| JP5579005B2 | Paper Bag With Valve |
| JP5574784B2 | Paper Bag With Valve |
| JP5500591B2 | Paper Bag With Valve |
| JP5500592B2 | Paper Bag With Valve |
| JP5500590B2 | Paper Bag With Valve |
| JP5369222B2 | Powder Packaging Bag |
| JP5230081B2 | Packaging Bag For Powder |
| JP5258934B2 | Interior Board And Its Construction Method |
| US8252311B2 | Bone Strengthening Food Supplement |
| JP4711655B2 | Multilayer Paper Bag |
| JP4443189B2 | Paper Bag With Valve |
| JP4278503B2 | Paper Bag With Valve |
| WO2009133694A1 | Bone Strengthening Food Supplement |
| JP4076044B2 | Powder Packaging Bag |
| JP4072902B2 | Pouches For Powder And Granules |
| US20080073052A1 | Paper Transporting Felt For Shoe Press, And Press Apparatus Of Shoe Press Type Paper Machine Having The Paper Transporting Felt |
| JP3833819B2 | Easy-To-Open Bag |
| JP3789289B2 | Multilayer Paper Bag And Its Manufacturing Method |
| JP3786317B2 | Overtape Knob For Bag Opening |
| JP3786361B2 | Powder Bag |
| JP3779518B2 | Bag Sealing Tape |
| JP3769211B2 | Powder Packaging Bag |
| JP3762546B2 | Paper Bag |
| JP3760147B2 | Multilayer Bag |
| JP3760146B2 | Multilayer Bag |
What are Ishikawa key innovation segments?
What Technologies are Covered by Ishikawa?
The chart below distributes patents filed by Ishikawa in different countries on the basis of the technology protected in patents. It also represents the markets where Ishikawa thinks it’s important to protect particular technological inventions.
R&D Focus: How has Ishikawa search focus changed over the years?
EXCLUSIVE INSIGHTS COMING SOON!
Interested in knowing about the areas of innovation that are being protected by Ishikawa?
