Assignee
DAY SHENG TONG
TW·4 granted patents·122 citations·filing 1991–1993
Top patents by PatentIndex Score
4 records- 0159US5144969AFully automatic collapsible umbrellaDAY SHENG TONG·Filed 1991·Granted Sep 8, 1992·34 cites·7 claims
- 0249US5261124AEye shield assembly for cap visorDAY SHENG TONG·Filed 1992·Granted Nov 16, 1993·57 cites·4 claims
- 0347US5088512ALightly operable fully automatic umbrellaDAY SHENG TONG·Filed 1991·Granted Feb 18, 1992·20 cites·6 claims
- 0436US5318067ASimplified fully automatic umbrellaDAY SHENG TONG·Filed 1993·Granted Jun 7, 1994·11 cites·6 claims
Join the waitlist — get patent alerts
Get an alert when DAY SHENG TONG files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →