For the Inventor, By the Inventor

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Nassau, Bahamas

Earth Sciences Limited

USPTO Granted Patents = 17

Forward Citations = 144

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22 inventors (with patents filed for the assignee):

Robert S Rickard (6 out of 7 patents)

Kent W Loest (5 out of 5 patents)

Roman Z Pyrih (4 out of 4 patents)

4. Orin F Carrington (4 out of 4 patents)

5. Vernon R Ewing (3 out of 3 patents)

6. George J Hartman (2 out of 3 patents)

7. Larry D Jennings (2 out of 2 patents)

8. John T Schaefer (2 out of 2 patents)

9. John Hugo Nellmapius (1 out of 1 patent)

10. John H Watt (1 out of 2 patents)

11. Stanley A Bunk (1 out of 5 patents)

12. Harry B Scott (1 out of 1 patent)

13. Peter A Angevine (1 out of 4 patents)

14. Philip M Rooke (1 out of 1 patent)

15. Helge O Forberg (1 out of 5 patents)

17 patents: Sort by Forward Citations

1. 6269952 - Methods and apparatus for use in processing and treating particulate material (2001-08-07),

2. 4305912 - Process for recovering uranium from wet process phosphoric acid (III) (1981-12-15),

3. 4263148 - Process for removing humic matter from phosphoric acid solutions (1981-04-21),

4. 4258015 - Recovering uranium from wet process phosphoric acid with alkylphenyl (1981-03-24),

5. 4258014 - Process for recovering uranium from wet process phosphoric acid (1981-03-24),

6. 4258013 - Uranium recovery from wet process phosphoric acid (1981-03-24),

7. 4230678 - Process for recovering aluminum from alunite (1980-10-28),

8. 4115110 - Vanadium recovery process (1978-09-19),

9. 4093700 - Process for reduction of alunite ore in aluminum recovery process (1978-06-06),

10. 4075068 - Process for the recovery of aluminum from alunite (1978-02-21),

11. 4057611 - Process for recovering aluminum from alunite (1977-11-08),

12. 4033842 - Production of monobasic potassium phosphate by electrodialysis (1977-07-05),

13. 4031182 - Recovery of aluminum from alunite ore using acid leach to purify the (1977-06-21),

14. 4029737 - Redox treatment of alunite ore (1977-06-14),

15. 4008307 - Production of monobasic potassium phosphate by ion exchange (1977-02-15),

Earth Sciences Limited is a leading provider of environmental consulting and engineering services. Our team of experts specializes in geotechnical engineering, environmental impact assessments, soil and water testing, and remediation solutions. With a focus on sustainable practices and innovative technologies, we strive to help our clients achieve their goals while protecting the earth's natural resources.

This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 16 2025

17 Patents

#5 in Nassau

#4 in Bahamas

#34,832 in the World

Nassau, Bahamas

Earth Sciences Limited

Forward Citations = 144

22 inventors:

Robert S Rickard (6 out of 7 patents)

Kent W Loest (5 out of 5 patents)

Roman Z Pyrih (4 out of 4 patents)

4. Orin F Carrington (4 out of 4 patents)

5. Vernon R Ewing (3 out of 3 patents)

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