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 26–50 of 57 patents

Patent #TitleCo-InventorsDate
D377450 Stackable berry container with hinged lid Robert Knoss 1997-01-21
5590805 Fruit box Robert Knoss 1997-01-07
D376314 Food container 1996-12-10
D374820 Cake container Robert Knoss 1996-10-22
D371961 Egg container Robert Knoss 1996-07-23
D371940 Food container 1996-07-23
D371964 Base for angel food cakes 1996-07-23
5497894 Clamshell container for food items Robert Knoss 1996-03-12
D365272 Clamshell container for food items Robert Knoss 1995-12-19
D364090 Shrimp package with hinged lid 1995-11-14
D363879 Blueberry container Robert Knoss 1995-11-07
5456379 Blueberry container Robert Knoss 1995-10-10
D363022 Container for herbs Robert Knoss 1995-10-10
D361714 Clamshell package for cored pineapple fruit 1995-08-29
D361035 Berry box 1995-08-08
D361036 Berry box 1995-08-08
D360825 Fruit container Robert Knoss 1995-08-01
D359901 Fruit box Robert Knoss 1995-07-04
D354435 Food package with hinged lid 1995-01-17
D354436 Food package with hinged lid 1995-01-17
D352454 Pastry package 1994-11-15
D351999 Food package with hinged lid 1994-11-01
5356023 Rose box with interchangeable lid and base 1994-10-18
D349633 Lunch box 1994-08-16
D349050 Sandwich container 1994-07-26