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For the Inventor, By the Inventor

Medina, MN, United States of America

Calvin S Krupa

This inventor holds 46 USPTO granted patents, plus 1 CIPO patent, primarily in Food Packaging. Top assignees: Ultra Pac, Inc., Blue Sky Foods, LLC, Ivex Packaging Corporation. Active years: 1992-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Calvin S Krupa. Retrieved from https://idiyas.com/inventor/calvin-s-krupa

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

USPTO Granted Patents = 46

% Patents Active = 95.7

 

Average Co-Inventor Count = 1.4

ph-index = 31

Forward Citations = 2,178(Granted Patents)


Location History:

  • Plymouth, MN (US) (1992 - 1994)
  • Hamel, MN (US) (1995 - 1997)
  • Medina, MN (US) (1994 - 2003)

Company Filing History:

goldMedal37 out of 42 
 
Ultra Pac, Inc.
 patents
silverMedal1 out of 1 
 
Blue Sky Foods, LLC
 patent
bronzeMedal1 out of 2 
 
Ivex Packaging Corporation
 patents
4. 1 out of 1 
 
Oven Ready Foods LLC
 patent
5. 2 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1992-2003

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Areas of Expertise:
Food Container
Clamshell Package
Hinged Lid
Fruit Box
Berry Container
Cake Container
Egg Carton
Shipping Package
Vegetable Container
Pastry Package
Lunch Box
Sandwich Container
46 patents (USPTO):Explore Patents
1. 6550630 - Container for frozen cake batter (2003-04-22),
2. 6478181 - Shrinkable tray with attachable lids (2002-11-12),
3. 6450341 - Shipping and baking package for food items (2002-09-17),
4. D421695 - Vegetable container (2000-03-21),
5. D395985 - Food container (1998-07-14),
6. D395796 - Food container (1998-07-07),
7. D394807 - Chicken container (1998-06-02),
8. D391850 - Pie container (1998-03-10),
9. D385784 - Fruit container (1997-11-04),
10. D385780 - Egg carton (1997-11-04),
11. 5653345 - Fruit box (1997-08-05),
12. D380381 - Fruit container (1997-07-01),
13. D379300 - Fruit container (1997-05-20),
14. D378192 - Stackable berry container with hinged lid (1997-02-25),
15. D377450 - Stackable berry container with hinged lid (1997-01-21),

Title: The Inventor Calvin S Krupa: Pioneering Innovations in Medina

Introduction: Calvin S Krupa, a distinguished inventor based in Medina, MN, is renowned for his groundbreaking contributions to the field of technology and innovation. With a passion for creating solutions that push the boundaries of what is possible, Krupa has established himself as a visionary in the industry.

Latest Patents: Krupa's latest patents showcase his ingenuity and forward-thinking approach to problem-solving. His inventions have been recognized for their unique design and practical applications in various sectors, ranging from consumer electronics to sustainable energy solutions.

Career Highlights: Throughout his illustrious career, Krupa has consistently demonstrated his ability to transform ideas into tangible inventions that make a difference. His dedication to innovation has led to the development of cutting-edge technologies that have revolutionized the way we live and work.

Collaborations: Krupa has collaborated with leading industry experts, researchers, and engineers to bring his ideas to life. By fostering partnerships with like-minded individuals and organizations, he has been able to leverage collective expertise and resources to drive innovation forward.

Conclusion: Calvin S Krupa's relentless pursuit of innovation and his unwavering commitment to excellence have solidified his reputation as a trailblazer in the world of inventions. His visionary approach to problem-solving continues to inspire future generations of inventors to push the boundaries of what is possible.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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