John C K Sham

This inventor holds 13 USPTO granted patents. Top assignees: Pentalpha Macau Commercial Offshore Ltd., Gt Investments (Bvi) Limited, Pentalpha Macau Commerical Offshore Limited. Active years: 2001-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: John C K Sham. Retrieved from https://idiyas.com/inventor/john-c-k-sham

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 13

% Patents Active = 100.0

Average Co-Inventor Count = 1.6

ph-index = 7

Forward Citations = 223(Granted Patents)

Company Filing History:

2 out of 2

Pentalpha Macau Commercial Offshore Ltd.

patents

1 out of 1

Gt Investments (Bvi) Limited

patent

1 out of 1

Pentalpha Macau Commerical Offshore Limited

patent

4. 8 out of 834,570

Other

patents

where one patent can have more than one assignee

Years Active: 2001-2007

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13 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7310852 - Valve assembly (2007-12-25),

2. D505406 - Rear projection television display (2005-05-24),

3. D503390 - Liquid crystal display television panel (2005-03-29),

4. D502155 - Television display (2005-02-22),

5. D485728 - Coffee maker (2004-01-28),

6. 6464760 - Ultraviolet air purifier (2002-10-15),

7. 6439106 - Automatic coffee maker with grinder (2002-08-27),

8. 6389957 - Automatic coffee maker with grinder (2002-05-21),

9. 6367370 - Automatic coffee maker with grinder (2002-04-09),

10. 6363837 - Juice extractor and beverage mixer apparatus (2002-04-02),

11. 6279458 - Rapid brew automatic coffee maker (2001-08-28),

12. 6227102 - Automatic coffee maker with grinder (2001-05-08),

13. 6212332 - Steam iron station (2001-04-03),

Title: Innovations and Contributions of John C K Sham

Introduction

John C K Sham is a notable inventor based in Hong Kong, CN. He has made significant contributions to the field of engineering, particularly in the development of innovative devices. With a total of 13 patents to his name, Sham has demonstrated a commitment to advancing technology and improving existing systems.

Latest Patents

Among his latest inventions is a valve assembly designed for use in carpet cleaning extraction machines and similar devices. This invention allows for the intake of liquid and the mixing of different liquids in a mixing chamber, such as clean water with detergent. It also facilitates the discharge of a selected liquid without the formation of an air or vapor lock, which can inhibit the discharge process. Specifically, this invention prevents vapor lock formation when water is drawn into a chamber, ensuring the efficient spraying of the liquid.

Career Highlights

Throughout his career, John C K Sham has worked with various companies, including Pentalpha Macau Commercial Offshore Ltd. His innovative spirit and technical expertise have led to the development of practical solutions that address real-world challenges.

Collaborations

Sham has collaborated with several professionals in his field, including Kumkit Kunavongvorakul. These partnerships have contributed to the successful development and implementation of his inventions.

Conclusion

John C K Sham's contributions to innovation and technology are commendable. His work continues to influence the industry, showcasing the importance of creativity and problem-solving in engineering.

Profile summary based on public USPTO records.

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]