Company Filing History:

11 out of 664

Weyerhaeuser Company Limited

Years Active: 2001-2006

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12 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7090744 - Process for making composition for conversion to lyocell fiber from sawdust (2006-08-15),

2. 7083704 - Process for making a composition for conversion to lyocell fiber from an alkaline pulp having low average degree of polymerization values (2006-08-01),

3. 6861023 - Process for making lyocell fiber from sawdust pulp (2005-03-01),

4. 6797113 - Use of thinnings and other low specific gravity wood for lyocell pulps method (2004-09-28),

5. 6686040 - Use of thinnings and other low specific gravity wood for lyocell products (2004-02-03),

6. 6686039 - Use of thinnings and other low specific gravity wood for lyocell pulps (2004-02-03),

7. 6685856 - Use of thinnings and other low specific gravity wood for lyocell products method (2004-02-03),

8. 6605350 - Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same (2003-08-12),

9. 6528163 - Lyocell fiber from sawdust pulp (2003-03-04),

10. 6491788 - Process for making lyocell fibers from alkaline pulp having low average degree of polymerization values (2002-12-10),

11. 6440523 - Lyocell fiber made from alkaline pulp having low average degree of polymerization values (2002-08-27),

12. 6331354 - Alkaline pulp having low average degree of polymerization values and method of producing the same (2001-12-18),

Title: W Harvey Persinger, Jr: Innovator in Lyocell Fiber Technology

Introduction

W Harvey Persinger, Jr. is a notable inventor based in Enumclaw, WA (US), recognized for his contributions to the field of fiber technology. He holds a total of 12 patents, showcasing his innovative spirit and dedication to advancing materials science.

Latest Patents

Among his latest patents is a process for making a composition for conversion to lyocell fiber from sawdust. This process involves pulping raw material in a digester to create an alkaline pulp, which includes sawdust in varying amounts. The invention emphasizes the importance of maintaining the hemicellulose content while reducing the average degree of polymerization of cellulose. Another significant patent focuses on creating compositions for lyocell fibers from an alkaline pulp with low average degree of polymerization values. This invention aims to produce fibers with high hemicellulose content and low copper numbers, ensuring a narrow molecular weight distribution.

Career Highlights

W Harvey Persinger, Jr. has worked with prominent companies such as Weyerhaeuser Company Limited and Weyerhaeuser. His experience in these organizations has contributed to his expertise in fiber technology and innovation.

Collaborations

Throughout his career, he has collaborated with notable individuals, including James E Sealey, II and Mengkui Luo. These partnerships have likely enriched his work and led to significant advancements in his field.

Conclusion

W Harvey Persinger, Jr. stands out as a key figure in the development of lyocell fiber technology, with a strong portfolio of patents and a history of collaboration with industry leaders. His work continues to influence the materials science landscape.

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