S Ananda Weerawarna

This inventor holds 32 USPTO granted patents and 1 published patent application, plus 5 CIPO patents and 7 EPO patents, primarily in Biodegradable Materials. Top assignees: Weyerhaeuser Nr Company, Weyerhaeuser Company Limited, International Paper Company. Active years: 2003-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: S Ananda Weerawarna. Retrieved from https://idiyas.com/inventor/s-ananda-weerawarna

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

USPTO Granted Patents = 32 (Patent Applications = 1)

% Patents Active = 65.6

CIPO Patents = 5

EPO Patents = 7 (Patent Applications = 5)

Average Co-Inventor Count = 1.8

ph-index = 10

Forward Citations = 376(Granted Patents)

Company Filing History:

20 out of 203

Weyerhaeuser Nr Company

patents

11 out of 664

Weyerhaeuser Company Limited

patents

1 out of 1,175

International Paper Company

patents

Years Active: 2003-2017

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Areas of Expertise:

Biodegradable Superabsorbent Particles

Carboxylated Cellulose Fibers

Cellulose Fibers

Mixed Polymer Network

Crosslinked Polymers

Fibrillated Blends

Catalytic Carboxylation

Hypochlorite Free Methods

Fiber Cement

Superabsorbent Composite

Pulp Fibers

Method of Crosslinking

32 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9845575 - Fibrillated blend of lyocell low DP pulp (2017-12-19),

2. 9328459 - Multi-stage catalytic carboxylation of mercerized cellulose fibers (2016-05-03),

3. 9056792 - Internally curing cement based materials (2015-06-16),

4. 8894812 - Fibrillated blend of lyocell and cellulosic low DP pulp (2014-11-25),

5. 8791178 - Fiber for fiber cement and resulting product (2014-07-29),

6. 8641869 - Method for making biodegradable superabsorbent particles (2014-02-04),

7. 8641863 - Catalytic carboxylation of cellulose fibers in a continuous process with multiple additions of catalyst, secondary oxidant and base to a moving slurry of cellulose fibers (2014-02-04),

8. 8461233 - Fiber for fiber cement and resulting product (2013-06-11),

9. 8101543 - Biodegradable superabsorbent particles (2012-01-24),

10. 8084391 - Fibers having biodegradable superabsorbent particles attached thereto (2011-12-27),

11. 7959762 - Method for making biodegradable superabsorbent particles (2011-06-14),

12. 7833384 - Method for making fiber having biodegradable superabsorbent particles attached thereto (2010-11-16),

13. 7785710 - Superabsorbent particles containing carboxyalkyl cellulose and temporary metal crosslinks (2010-08-31),

14. 7749317 - Fibrous blend and method of making (2010-07-06),

15. 7717995 - Methods for the preparation of mixed polymer superabsorbent fibers containing cellulose (2010-05-18),

Title: Celebrating the Innovations of S. Ananda Weerawarna

Introduction

S. Ananda Weerawarna is a prominent inventor based in Seattle, WA, with an impressive portfolio of 32 patents. His work has significantly influenced advancements in the field of cellulose and polymer technologies. Through his innovative approach, he has developed solutions that not only enhance material properties but also contribute to sustainable practices within the industry.

Latest Patents

Among his notable recent inventions is the "Fibrillated blend of lyocell low DP pulp." This invention consists of a fibrillated blend of lyocell and cellulosic pulp, which exhibits a degree of polymerization ranging from 200 to 1000, as measured by ASTM Test 1795-96. The patent also includes a method for creating the blend and specifies various materials that incorporate this innovative blend.

Another significant patent is the "Multi-stage catalytic carboxylation of mercerized cellulose fibers." This invention describes a process for producing carboxylated mercerized cellulose fiber characterized by a carboxyl substitution at the C-6 position of anhydroglucose units. The process cleverly utilizes two catalytic carboxylation stages in series, involving pH adjustments and the incorporation of specific catalysts and oxidants.

Career Highlights

S. Ananda Weerawarna has had a distinguished career, prominently working with esteemed organizations such as Weyerhaeuser NR Company and Weyerhaeuser Company Limited. His tenure at these companies has allowed him to refine his innovative skills and contribute to cutting-edge projects in cellulose technology and material science.

Collaborations

Throughout his career, Weerawarna has collaborated with various talented individuals, including Mengkui Luo and Richard A Jewell. These collaborations have fostered a dynamic exchange of ideas and expertise, further driving the development of innovative technologies in his field.

Conclusion

S. Ananda Weerawarna's contributions to cellulose technology and material science are noteworthy. His portfolio of patents showcases his commitment to innovation and sustainable practices. As industries continue to evolve, the impact of his inventions will likely pave the way for future advancements, solidifying his legacy as a significant inventor in his field.

Profile summary based on public USPTO records.