1. Introduction

The human and commercial side: which universities and individual inventors are driving ideas, how companies have teamed up, which products have reached the market and what the findings suggest for anyone planning to work in this field.

2. Universities: A Largely Chinese Research Effort

Universities form a distinct group of innovators. The study found that the leading university researchers in waterless washing are mostly Chinese. The institutions named include:

• Guangdong University of Technology
• Hohai University
• Institute of Plasma Physics, Chinese Academy of Sciences
• Jiangsu University of Science and Technology
• Xiamen University of Technology
• University of Leeds (United Kingdom)

Most of these universities work on ozone technology, which matches the finding in Part 2 that ozone is the main university focus. Ultrasonic cleaning also appears among their research areas. The one prominent exception is the University of Leeds in the UK. Xeros, the company behind the polymer-bead washing machine, was founded on work that began at the School of Design at the University of Leeds. This is a good example of academic research turning into a commercial product and the study identifies polymer beads as the newest technology in the field.

The contrast with company filers is clear. Corporations concentrate on steam and hot air, which suit mass-market appliances, while universities explore ozone, plasma-related work and new media such as beads. This pattern means that universities are often the source of early-stage ideas that companies may later license or acquire.

3. Individual Inventors

Individual inventors, who file patents in their own name rather than for a company, have also been important. The study notes that they hold many published patents and that most of them are from Korea, followed by Germany. Their work centres on hot air, steam, ozone and ultraviolet technology, but the biggest share of their patents relates to hot air.

Source: study "Top Inventor and Startups" slide. Note: one commentary line in the source gives a different figure for the top inventor; the table and bar chart figures are used here.

Moon Jung Wook leads the list. A large share of his patents were published between 2014 and 2017 and they relate to hot air and steam. His portfolio breaks down at roughly 54% steam, 42% hot air and 4% ultraviolet. Three of the five top inventors are Korean, in line with Korea's leading position in priority filings and Hans Eglmeier represents Germany.

4. Partnerships and Collaborations

Waterless washing is a field where new technology firms and established manufacturers need each other and the study records two collaborations.

• Xeros and Henkel: Xeros worked with Henkel for the Asian market. Henkel developed plastic beads that are tumbled with the clothes to remove stains and also absorb water. This pairs a technology start-up with a major consumer-goods and laundry chemicals company that has distribution reach.
• Panasonic and Daiwa: the two companies collaborated on a laundry robot that washes, dries and folds clothes. This extends the idea of waterless care to full automation of the laundry workflow.

Both examples show different business models. The first shares a core technology through a supply partnership. The second combines hardware expertise from different companies to create a new product category.

5. Products on the Market

The study maps several patent families to commercial products. The list below groups the main ones by technology.

Source: study market-trend slides. Related patent numbers are listed in the original slides for each product.

The study also collected consumer reviews of waterless machines, which is a useful reminder that patent strength does not guarantee customer satisfaction. Anyone assessing the market should combine patent data with real-world reviews, pricing and sales figures.

6. What the Findings Mean

6.1 For manufacturers

LG's steam and hot-air position is strong, but the data shows steam activity falling after 2014. A new entrant is unlikely to gain much by filing in the same crowded areas. Gaps seem more likely in ozone, polymer beads, ultrasonics and combinations of technologies, though a proper freedom-to-operate analysis would be needed before acting.

6.2 For researchers and start-ups

The Leeds-Xeros story shows how a university idea can lead to a commercial product. Partnerships such as Xeros with Henkel show that start-ups can reach large markets by working with established companies, especially in regions such as Asia.

6.3 For investors and analysts

Korea and China are the key places to watch. Korean innovation is driven by a few large firms, while Chinese innovation comes from universities and many smaller filers. Each pattern calls for a different monitoring strategy: follow company portfolios in Korea and follow research institutions in China.

7. Limitations

• Patent counts show research effort, not market success or product quality.
• Machine translation may have affected the reading of non-English patents.
• The data stops in 2017, with only a partial year, so the picture is out of date for current decisions.
• The source report states that it is technical, not legal and gives no opinion on patentability, infringement or freedom to operate.

8. Conclusion of the Series

Waterless washing grew rapidly from 2012 to 2016, led by LG with Korea and China as the main source countries. Steam rose first and then gave way to ozone, hot air and UV as areas of interest, with Haier leading on ozone. Universities, especially in China, are pushing ozone and newer ideas, while Xeros demonstrates the commercial potential of polymer beads. Collaborations like Xeros with Henkel and Panasonic with Daiwa show that the field rewards partnerships. For anyone entering the field, the main lesson is to combine technical novelty with a clear consumer benefit, whether that is saving water, sanitising clothes or saving the user time.