Company Filing History:

9 out of 1,008

Bayer Corporation

patents

3 out of 589

Sun Chemical Corporation

patents

Years Active: 1997-2013

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12 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8557990 - 2,5-di(methoxyanilino) terephthalic acid polymorphs and quinacridones realized therefrom (2013-10-15),

2. 8430954 - Crystal forms of quinacridones made from 2,9-dimethoxyquinacridone and 2,9-dichloroquinacridone (2013-04-30),

3. 8197592 - Crystal forms of quinacridones made from 2,9-dimethoxyquinacridone and 2,9-dichloroquinacridone (2012-06-12),

4. 6494948 - Preparation of quinacridone pigment compositions (2002-12-17),

5. 6066203 - Pigment derivatives for waterborne coatings (2000-05-23),

6. 5972099 - Process for preparing organic pigment compositions (1999-10-26),

7. 5879444 - Organic pigment compositions (1999-03-09),

8. 5755873 - Incorporation of quinacridone additives during quinacridone preparation (1998-05-26),

9. 5713999 - Incorporation of pigment derivatives in quinacridone processes (1998-02-03),

10. 5711800 - Organic pigment compositions (1998-01-27),

11. 5698024 - Organic pigment compositions (1997-12-16),

12. 5683502 - Incorporation of aromatic polycyclic compounds in quinacridone processes (1997-11-04),

Title: Innovative Contributions of Inventor Daphne J Rice

Introduction

Daphne J Rice, an accomplished inventor based in Charleston, SC, has made significant strides in the field of chemistry and material science. With a remarkable portfolio of 12 patents, her work predominantly revolves around innovative compounds and their applications across various industries.

Latest Patents

Daphne's latest patents focus on novel polymorphs of 2,5-di(methoxyanilino) terephthalic acid and related quinacridones. Her inventions detail the synthesis of crystal types I and II of 2,5-di(p-methoxyanilino)terephthalic acid, achieved by meticulously controlling the pH during the recovery phase of oxidized products. Additionally, she has developed unique crystal forms of solid solutions of 2,9-dimethoxyquinacridone and 2,9-dichloroquinacridone, where specific heating processes in polyphosphoric acid yield effective coloring agents for a multitude of applications, including fibers, plastics, coatings, and cosmetics.

Career Highlights

Daphne has held pivotal positions in esteemed companies such as Bayer Corporation and Sun Chemical Corporation. Her expertise in synthetic chemistry and materials has enabled her to contribute substantially to research and development initiatives, driving innovations that impact various sectors.

Collaborations

Throughout her career, Daphne has collaborated with notable professionals, including Ibraheem T Badejo and Brian L Thompson. These partnerships have enhanced her research endeavors and facilitated the progression of her groundbreaking inventions.

Conclusion

Daphne J Rice exemplifies the spirit of innovation through her dynamic contributions to materials science. Her patented developments not only stand as a testament to her ingenuity but also play a significant role in advancing the applications of colorants in numerous industries. With a track record of collaboration and success, Daphne continues to pave the way for future innovations in her field.

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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.