Washington Crossing, PA, United States of America

John A Wismer

This inventor holds 21 USPTO granted patents, plus 5 CIPO patents and 8 EPO patents, primarily in Fluorine Chemical Processes. Top assignees: Arkema Inc., Elf Atochem North America, Inc., Arkema France. Active years: 1990-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: John A Wismer. Retrieved from https://idiyas.com/inventor/john-a-wismer

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

USPTO Granted Patents = 21

% Patents Active = 76.2

CIPO Patents = 5

EPO Patents = 8 (Patent Applications = 7)

Average Co-Inventor Count = 2.1

ph-index = 6

Forward Citations = 147(Granted Patents)

Location History:

Devon, PA (US) (1990 - 1997)
Lower Makefield, PA (US) (2000 - 2003)
Washington Crossing, PA (US) (1997 - 2022)

Company Filing History:

Elf Atochem North America, Inc.

Atofina Chemicals, Inc.

Atochem North America, Inc.

Years Active: 1990-2022

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Areas of Expertise:

R1233ZD

Hydrochlorofluoroolefins

Fluorine Compounds

E-1-chloro-3,3,3-trifluoropropene

Hydrogen Fluoride

Azeotrope Separation

HFC-32 Recovery

Extractive Distillation

Continuous Liquid Phase

Adiabatic Hydrofluorination

Sulfur Removal

Trifluoroethane Production

21 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11220472 - Processes and systems for recovering R1233ZD in purified form (2022-01-11),

2. 10532965 - E-1-chloro-3,3,3-trifluoropropene production process from 1,1,3,3-tetrachloropropene (2020-01-14),

3. 9834499 - E-1-chloro-3,3,3-trifluoropropene production process from 1,1,3,3-tetrachloropropene (2017-12-05),

4. 9725384 - Method for separating organofluorine compounds using membrane (2017-08-08),

5. 9284241 - Process for the removal of contaminant from a hydrochlorofluoroolefin by extractive distillation (2016-03-15),

6. 9255045 - E-1-chloro-3,3,3-trifluoropropene production process from 1,1,3,3-tetrachloropropene (2016-02-09),

7. 9061958 - Separation of R-1233 from hydrogen fluoride (2015-06-23),

8. 8987534 - Process for the manufacture of hydrochlorofluoroolefins (2015-03-24),

9. 8895788 - Process for the manufacture of hydrofluoroolefins (2014-11-25),

10. 8735636 - Separation of R-1233 from hydrogen fluoride (2014-05-27),

11. 8642819 - Process for the manufacture of hydrochlorofluoroolefins (2014-02-04),

12. 8642818 - Process for the manufacture of hydrofluoroolefins (2014-02-04),

13. 6605193 - Recovery of HFC-32 (2003-08-12),

14. 6479718 - Liquid phase process for HCFC-123 (2002-11-12),

15. 6013846 - Azeotrope of HF and 1233zd (2000-01-11),

Title: The Innovative Journey of John A Wismer in Chemical Engineering

Introduction:

John A Wismer is a prolific inventor hailing from Washington Crossing, PA (US), with an impressive portfolio of 21 patents in his name. His work in chemical engineering has made significant contributions to the field, particularly in the recovery and production processes of specialized chemicals.

Latest Patents:

Among his latest patents, John A Wismer has delved into groundbreaking processes and systems for recovering R1233ZD in purified form. These inventions involve intricate systems for separating feed streams of hydrogen fluoride and R1233zd, utilizing azeotropic distillation in multiple distillation columns to achieve high purity levels of the desired chemical compounds.

One notable patent focuses on the production process of E-1-chloro-3,3,3-trifluoropropene from 1,1,3,3-tetrachloropropene. This process highlights Wismer's expertise in chemical reactions, specifying optimal conditions for the conversion of precursors into valuable end products.

Career Highlights:

Having worked in esteemed companies like Arkema Inc. and Elf Atochem North America, Inc., John A Wismer has honed his skills and expertise in chemical engineering. His time in these organizations has undoubtedly influenced his innovative approaches to chemical processes and systems.

Collaborations:

Throughout his career, John A Wismer has collaborated with industry experts such as Maher Y Elsheikh and Philippe Bonnet. These partnerships have fostered creativity and knowledge sharing, leading to the development of pioneering technologies in the realm of chemical engineering.

Conclusion:

In conclusion, John A Wismer stands as a beacon of innovation in the field of chemical engineering, with a remarkable track record of patents and inventions. His dedication to advancing purification and production processes for specialized chemicals has cemented his legacy as a visionary inventor in the industry.

Profile summary based on public USPTO records.