YZ

Yu Zheng

PC Patent Category: 12 patents #1 of 1Top 100%
📍 Beijing, PA: #1 of 8 inventorsTop 15%
Overall (2002): #941 of 266,432Top 1%
12
Patents 2002

Issued Patents 2002

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDate
6499498 Collapsible structures having overlapping support loops 2002-12-31
6494224 Collapsible structures 2002-12-17
6491052 Collapsible panels having multiple frame members 2002-12-10
6481451 Vertically stacked collapsible structures 2002-11-19
6460556 Adjustable collapsible panels 2002-10-08
6461257 Collapsible structures 2002-10-08
6453923 Collapsible structures 2002-09-24
6449147 Collapsible structures having enhancements 2002-09-10
6408461 Collapsible assembly 2002-06-25
6390111 Collapsible structures 2002-05-21
6360761 Collapsible play structures 2002-03-26
6357510 Collapsible support frames 2002-03-19