CK

Calvin S. Krupa

UP Ultra Pac: 37 patents #1 of 9Top 15%
📍 Greenfield, MN: #2 of 27 inventorsTop 8%
🗺 Minnesota: #692 of 52,454 inventorsTop 2%
Overall (All Time): #43,284 of 4,157,543Top 2%
57
Patents All Time

Issued Patents All Time

Showing 1–25 of 57 patents

Patent #TitleCo-InventorsDate
10464732 Air tight gas circulating container Michael Jacobs 2019-11-05
D820107 Covered seafood tray 2018-06-12
8960489 Biodegradable and compostable single-serve beverage ingredient package Darren Joseph Footz 2015-02-24
D701429 Food service tray 2014-03-25
8636168 Biodegradable food service container 2014-01-28
8561823 Food service container 2013-10-22
D687705 Biodegradable food service container 2013-08-13
D665663 Biodegradable, compostable food container 2012-08-21
D664425 Clamshell 2012-07-31
D627635 Biodegradable, compostable food container 2010-11-23
D625994 Picnic kit assembly 2010-10-26
6550630 Container for frozen cake batter 2003-04-22
6478181 Shrinkable tray with attachable lids Robert Knoss, Richard T. Steichen 2002-11-12
6450341 Shipping and baking package for food items Patrick Boedigheimer 2002-09-17
D421695 Vegetable container Robert Knoss 2000-03-21
D395985 Food container Robert Knoss 1998-07-14
D395796 Food container Robert Knoss 1998-07-07
D394807 Chicken container Robert Knoss 1998-06-02
D391850 Pie container Robert Knoss 1998-03-10
D385780 Egg carton Robert Knoss 1997-11-04
D385784 Fruit container Robert Knoss 1997-11-04
5653345 Fruit box Robert Knoss 1997-08-05
D380381 Fruit container Robert Knoss 1997-07-01
D379300 Fruit container Robert Knoss 1997-05-20
D378192 Stackable berry container with hinged lid Robert Knoss 1997-02-25