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For the Inventor, By the Inventor

St. Louis, MO, United States of America

Ralston Purina Company


USPTO Granted Patents = 128


Trademarks = 77

Forward Citations = 1,978

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168 inventors (with patents filed for the assignee):

goldMedal Kent J Lanter (11 out of 46 patents)

silverMedal Norman L Betz (10 out of 10 patents)

bronzeMedal Thomas L Krinski (8 out of 12 patents)

4.  Leroy V Skoch (7 out of 7 patents)

5.  Danny L Williams (6 out of 12 patents)

6.  Carlo J Hansen (5 out of 5 patents)

7.  Frank J Simon (5 out of 5 patents)

8.  Timothy A Miller (5 out of 5 patents)

9.  Frank J Weber (4 out of 5 patents)

10.  Donald Roland Speck (4 out of 16 patents)

11.  Ralph A Hoer (4 out of 4 patents)

12.  Alan L Steinmetz (4 out of 4 patents)

13.  Thomas J Wagner (3 out of 4 patents)

14.  Iue Chung Cho (3 out of 4 patents)

15.  Charles E Coco (3 out of 7 patents)


Core Competencies:
Hypoallergenic Pet Food
Animal Litter Container
Palatability Enhancers
Extruder Technology
Pet Food Dispenser
Animal Feeding Systems
Modified Protein Adhesives
Dust Reducing Agents
High Fiber Animal Food
Cereal Product Production
Chocolate Chip Depositing
Soy Polysaccharides

128 patents:

1. 6403142 - Hypoallergenic pet food (2002-06-11),
2. 6358546 - Methods for customizing pet food (2002-03-19),
3. 6354243 - Animal litter container (2002-03-12),
4. 6350485 - Methods and compositions for enhancing palatability of pet food (2002-02-26),
5. 6276300 - Animal litter (2001-08-21),
6. 6270820 - Process for dry stable intermediate pet food composition (2001-08-07),
7. 6261591 - Method for reducing hip joint laxity (2001-07-17),
8. 6261081 - Extruder with variable restriction element (2001-07-17),
9. 6254920 - Methods and compositions for enhancing palatability of pet food (2001-07-03),
10. 6055932 - Pet food dispenser adapter (2000-05-02),
11. 6035284 - System and method for product rationalization (2000-03-07),
12. 6025004 - Process for mechanically controlling the bulk density of an extruded (2000-02-15),
13. 5826543 - Clumpable animal litter containing a dust reducing agent (1998-10-27),
14. 5596948 - Animal urine collection and analysis system and its method of use (1997-01-28),
15. 5508172 - Modified soy fiber material of improved sensory properties (1996-04-16),
Ralston Purina Company, a subsidiary of Nestlé, is an American manufacturer of pet food, treats, and cat litter. With a history dating back to 1894, the company provides a variety of pet care products under their renowned brand, Purina. From high-quality nutrition for dogs and cats to therapeutic diets, Purina offers a wide range of solutions to meet the unique needs of pets. They also strive to improve the lives of animals through charitable initiatives and animal welfare programs.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

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128 Patents

#23 in St. Louis, MO

#36 in Missouri

#2,908 in US

#6,098 in the World

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St. Louis, MO, United States of America

Ralston Purina Company

Forward Citations = 1,978

168 inventors:

goldMedal Kent J Lanter (11 out of 46 patents)

silverMedal Norman L Betz (10 out of 10 patents)

bronzeMedal Thomas L Krinski (8 out of 12 patents)

4.  Leroy V Skoch (7 out of 7 patents)

5.  Danny L Williams (6 out of 12 patents)

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