Company Filing History:

13 out of 7,865

Minnesota Mining and Manufacturing Company

patents

5 out of 14,059

3m Innovative Properties Company

patents

2 out of 832,680

Other

patents

Years Active: 1984-2004

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20 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6802870 - Method for imparting soil and stain resistance to carpet (2004-10-12),

2. 6736857 - Method for imparting soil and stain resistance to carpet (2004-05-18),

3. 6723438 - Soil resistant curable laminate coating (2004-04-20),

4. 6468587 - Treatment of fibrous substrates with acidic silsesquioxanes emulsions (2002-10-22),

5. 6235128 - Carbon and alloy steels thermochemical treatments (2001-05-22),

6. 6074436 - Carpet treatment composition comprising polycarboxylate salts (2000-06-13),

7. 5756181 - Repellent and soil resistant carpet treated with ammonium (1998-05-26),

8. 5744201 - Method for treating carpet using PH adjustment (1998-04-28),

9. 5738687 - Method for treating carpets with polycarboxylate salts to enhance soil (1998-04-14),

10. 5492599 - Treated substrate having improved release properties (1996-02-20),

11. 5098774 - Divalent metal salts of sulfonated novolak resins and methods for (1992-03-24),

12. 4937123 - Process for providing polyamide materials with stain resistance (1990-06-26),

13. 4875901 - Treating fibrous polyamide articles (1989-10-24),

14. 4822373 - Process for providing polyamide materials with stain resistance with (1989-04-18),

15. 4748267 - Fluorochemical biuret compounds and fibrous substrates treated therewith (1988-05-31),

Title: The Innovative Journey of Inventor John C Chang

Introduction:

John C Chang, a prolific inventor based in New Brighton, MN, has left a lasting impact on the field of carpet cleaning and treatment with his groundbreaking patents. With a total of 20 patents to his name, Chang's contributions have significantly advanced the industry.

Latest Patents:

Chang's latest patents showcase his expertise and innovation in the realm of carpet maintenance. One notable invention is the "Method for imparting soil and stain resistance to carpet," which introduces a solventless cleaning and treating composition. This composition includes key components such as a stainblocking polymer, a silsesquioxane anti-soiling polymer, a surfactant, and optional sequesting agents or salts.

Career Highlights:

Throughout his career, Chang has worked with prominent companies such as Minnesota Mining and Manufacturing Company, known as 3M. His tenure at these esteemed organizations has provided him with the platform to nurture his inventive spirit and drive for technological advancement.

Collaborations:

In his professional journey, Chang has collaborated with esteemed colleagues such as Irvin F Dunsmore and Shou-Lu G Wang. These collaborations have not only enriched his own work but have also contributed to the collective innovation within the industry.

Conclusion:

John C Chang's remarkable journey as an inventor underscores his commitment to pioneering solutions and pushing the boundaries of traditional practices. His patents stand as a testament to his ingenuity and unwavering dedication to driving progress in the field of carpet maintenance.

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Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.