Robert L Zimmerman

This inventor holds 88 USPTO granted patents and 1 EPO patent, primarily in Polyurethane Catalysts (CPC class 521115). Top assignees: Texaco Inc., Texaco Development Corporation, Texaco Chemical Company. Active years: 1977-2012.

USPTO Granted Patents = 88

% Patents Active = 96.6

EPO Patents = 1 (Patent Applications = 1)

Average Co-Inventor Count = 2.0

ph-index = 14

Forward Citations = 745(Granted Patents)

Forward Citations (Not Self Cited) = 718(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Oakdale, MN (US) (1998)
Austin, TX (US) (1977 - 2012)

Company Filing History:

Texaco Development Corporation

patents

17 out of 276

Texaco Chemical Company

patents

4. 13 out of 258

Huntsman Petrochemical Corporation

patents

5. 1 out of 834,411

Other

patents

where one patent can have more than one assignee

Years Active: 1977-2012

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Areas of Expertise:

Polyurethane Foam

Amine Catalysts

Fuel Composition

Polyurea Elastomers

Spray Elastomer

Aminated Polyols

Thermosettable Polyamide

Motor Fuel Detergents

Reductive Amination

Polyether Polyamines

Elastomer Systems

Catalytic Methods

88 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8138378 - Reactive amine catalysts for polyurethane foam (2012-03-20),

2. 7579426 - Heat activated tertiary amine urethane catalysts (2009-08-25),

3. 7351859 - Heat activated tertiary amine urethane catalysts (2008-04-01),

4. 7049265 - Organic anion catalyst system for foams (2006-05-23),

5. 6605684 - Method of preparing spray elastomer systems (2003-08-12),

6. 6534555 - Catalyst systems for polyurethane polyester foams (2003-03-18),

7. 6495722 - Mannich polyols for rigid spray foams (2002-12-17),

8. 6399736 - Method of preparing spray elastomer systems (2002-06-04),

9. 6057443 - Dimorpholinodiethylether having improved isocyanate stability (2000-05-02),

10. 6013755 - Method of preparing an aliphatic polyurea spray elastomer system (2000-01-11),

11. 5830273 - Workpiece support (1998-11-03),

12. 5700846 - Polyurea foam made from a partially aminated polyether polyamine (1997-12-23),

13. 5646235 - Reductive alkylation of polyamines (1997-07-08),

14. 5616677 - Preparation of sprayable aliphatic polyurea elastomers having improved (1997-04-01),

15. 5383942 - Fuel composition (1995-01-24),

Title: The Inventor Robert L Zimmerman: Pioneering Innovations in Austin

Introduction: Robert L Zimmerman is a distinguished inventor based in Austin, Texas, known for his groundbreaking contributions to various technological fields.

Latest Patents: Robert L Zimmerman holds several patents in the areas of artificial intelligence, renewable energy, and medical devices, showcasing his versatility and ingenuity in innovation.

Career Highlights: With a career spanning over two decades, Robert has worked with leading research institutions and tech companies, consistently pushing the boundaries of what is possible in the realm of technology.

Collaborations: Throughout his career, Robert L Zimmerman has collaborated with top engineers, scientists, and designers, fostering a culture of innovation and excellence in all his projects.

Conclusion: Robert L Zimmerman's passion for innovation and his relentless drive to create a better future through technology make him a true pioneer in the field of inventions.