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For the Inventor, By the Inventor

Rogers, MN, United States of America

Ultra Pac, Inc.


USPTO Granted Patents = 42


Trademarks = 1

Forward Citations = 1,830

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9 inventors (with patents filed for the assignee):

goldMedal Calvin S Krupa (37 out of 46 patents)

silverMedal Robert Knoss (18 out of 24 patents)

bronzeMedal Steven R Anderson (2 out of 2 patents)

4.  Jeffrey M Smith (2 out of 2 patents)

5.  Cal Krupa (2 out of 2 patents)

6.  Timothy Henry Kuitems (1 out of 2 patents)

7.  Richard F Smith (1 out of 2 patents)

8.  Judie K Smith (1 out of 1 patent)

9.  Clavin S Krupa (1 out of 1 patent)

10.  Robert A Knoss (1 patent)


Core Competencies:
Food Packaging
Container Design
Hinged Lid Technology
Stackable Containers
Berry Boxes
Fruit Containers
Cake Packaging
Snack Containers
Clamshell Packaging
Storage Solutions
Compact Disc Holders
Baked Goods Containers

42 patents:

1. D421695 - Vegetable container (2000-03-21),
2. 5887713 - Holder for compact discs (1999-03-30),
3. D395985 - Food container (1998-07-14),
4. D395796 - Food container (1998-07-07),
5. D394807 - Chicken container (1998-06-02),
6. D391850 - Pie container (1998-03-10),
7. 5685427 - Holder for removably supporting a compact disk (1997-11-11),
8. D385784 - Fruit container (1997-11-04),
9. D385780 - Egg carton (1997-11-04),
10. 5653345 - Fruit box (1997-08-05),
11. D380381 - Fruit container (1997-07-01),
12. D379300 - Fruit container (1997-05-20),
13. D378192 - Stackable berry container with hinged lid (1997-02-25),
14. D377450 - Stackable berry container with hinged lid (1997-01-21),
15. 5590805 - Fruit box (1997-01-07),
Ultra Pac, Inc. is a leading packaging solutions provider specializing in customized packaging for a wide range of industries. With a focus on innovation and quality, we offer a diverse selection of packaging products and services to meet our clients' unique needs. Our expert team is dedicated to providing superior customer service and delivering efficient packaging solutions. Contact us today to learn more about how Ultra Pac, Inc. can help with your packaging needs.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

42 Patents

#1 in Rogers, MN

#232 in Minnesota

#7,985 in US

#15,864 in the World

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Rogers, MN, United States of America

Ultra Pac, Inc.

Forward Citations = 1,830

9 inventors:

goldMedal Calvin S Krupa (37 out of 46 patents)

silverMedal Robert Knoss (18 out of 24 patents)

bronzeMedal Steven R Anderson (2 out of 2 patents)

4.  Jeffrey M Smith (2 out of 2 patents)

5.  Cal Krupa (2 out of 2 patents)

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