IP Library › Granted Patent US 11,000,045
Granted Patent B2
US 11,000,045 · App. 16/215,187 · Granted May 11, 2021

Reactive gas, reactive gas generation system and product treatment using reactive gas

Inventors: Kevin M. Keener (Ames, IA); Mark A. Hochwalt (Chesterfield, MO)
Assignee: NanoGuard Technologies, LLC
A23B9/22A61L2/14A61L2/20A61L2/202A23V2002/00A61L9/22A61L2202/25
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Quick Facts
Patent No.
US 11,000,045
App. No.
16/215,187
Granted
May 11, 2021
Kind
B2
Abstract

A method of treating a product or surface with a reactive gas, comprises producing the reactive gas by forming a high-voltage cold plasma (HVCP) from a working gas; transporting the reactive gas at least 5 cm away from the HVCP; followed by contacting the product or surface with the reactive gas. The HVCP does not contact the product or surface.

Claims (57)

1. A method of treating food with a reactive gas, comprising:

producing the reactive gas by forming a high-voltage cold plasma (HVCP) from a working gas;

transporting the reactive gas at least 3 meters away from the HVCP; followed by

contacting the food with the reactive gas;

wherein the HVCP does not contact the food,

the food is Salmonella, Listeria , and/or E. coli pasteurized by the contacting, and the reactive gas is gas produced by the HVCP.

2. The method of claim 1 , wherein the food is not sealed or substantially sealed inside a package during the contacting.

3. The method of claim 1 , wherein the food comprises grain.

4. The method of claim 1 , further comprising removing the reactive gas from contact with the food, after 1 second to 12 hours.

5. The method of claim 1 , wherein the reactive gas comprises ozone and at least one nitrogen oxide.

6. The method of claim 1 , wherein the working gas comprises MA65.

7. A method of treating animal feed with a reactive gas, comprising:

producing the reactive gas by forming a high-voltage cold plasma (HVCP) from a working gas;

transporting the reactive gas at least 3 meters away from the HVCP; followed by

contacting the animal feed with the reactive gas;

wherein the HVCP does not contact the animal feed,

the animal feed is Salmonella, Listeria , and/or E. roll pasteurized by the contacting, and

the reactive gas is gas produced by the HVCP.

8. The method of claim 7 , further comprising removing the reactive gas from contact with the animal feed, after 1 second to 12 hours.

9. The method of claim 7 , wherein the working gas comprises MA65.

10. The method of claim 7 , wherein the reactive gas comprises ozone and at least one nitrogen oxide.

11. The method of claim 1 , wherein the food is canning sterilized by the contacting.

12. The method of claim 1 , wherein the contacting is carried out with the food in a fluidized bed.

13. The method of claim 1 , further comprising removing the reactive gas from contact with the food, after 35 minutes to 12 hours.

14. The method of claim 1 , wherein the contacting is carried out with the food moving on a conveyor.

15. The method of claim 1 , wherein the contacting is carried out in a treatment chamber having a volume of at least 1 cubic meter.

16. The method of claim 1 , wherein the food is Salmonella pasteurized by the contacting.

17. The method of claim 1 , wherein the food is Listeria pasteurized by the contacting.

18. The method of claim 1 , wherein the food is E. coli pasteurized by the contacting.

19. The method of claim 7 , wherein the animal feed is canning sterilized by the contacting.

20. The method of claim 7 , wherein the contacting is carried out with the animal feed in a fluidized bed.

21. The Method of claim 7 , further comprising removing the reactive gas from contact with the animal feed, after 35 minutes to 12 hours.

22. The method of claim 7 , wherein the contacting is carried out with the animal feed moving on a conveyor.

23. The method of claim 7 , wherein the contacting is carried out in a treatment chamber having a volume of at least 1 cubic meter.

24. The method of claim 7 wherein the animal feed is Salmonella pasteurized by the contacting.

25. The method of claim 7 , wherein the animal feed is Listeria pasteurized by the contacting.

26. The method of claim 7 , wherein the ea mal feed is E. coli pasteurized by the contacting.

27. A method of treating fruit or seeds with a reactive gas, comprising:

producing the reactive gas by forming a high-voltage cold plasma (HVCP) from a working gas;

transporting the reactive gas at least 3 meters away from the HVCP; followed by

contacting the fruit or seeds with the reactive gas;

wherein the HVCP does not contact the fruit or seeds,

the fruit or seeds is Salmonella Listeria , and/or E. Coli pasteurized by the contacting, and

the reactive gas is gas produced by the HVCP.

28. The method of claim 27 , wherein the fruit or seeds are canning sterilized by the contacting.

29. The method of claim 27 , wherein the working gas comprises MA65.

30. The method of claim 27 , wherein the reactive gas comprises ozone and at least one nitrogen oxide.

31. The method of claim 27 , wherein the fruit or seeds are whole corn or whole wheat.

32. The method of claim 27 , wherein the contacting is carried out with the fruit or seeds in a fluidized bed.

33. The method of claim 27 , further comprising removing the reactive gas from contact with the fruit or seeds, after 35 minutes to 12 hours.

34. The method of claim 27 , wherein the contacting is carried out with the fruit or seeds moving on a conveyor.

35. The method of claim 27 , wherein the contacting is carried out in a treatment chamber having a volume of at least 1 cubic meter.

36. The method of claim 32 , wherein the fruit or seeds are canning sterilized by the contacting.

37. The method of claim 27 , wherein the fruit or seeds are Salmonella pasteurized by the contacting.

38. The method of claim 27 , wherein the fruit or seeds are Listeria pasteurized by the contacting.

39. The method of claim 27 , wherein the fruit or seeds are E. coli pasteurized by the contacting.

40. The method of claim 27 , wherein the fruit or seeds are human food.

Continuity (2)
Continuation 14921910 · Oct 23, 2015
Related Publication 20190159471A1 · May 30, 2019
Cited By (2)
US 12,274,281 US 12,588,683