Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Valve made from two materials and writing utensil with retractable tip incorporating same

Valve made from two materials and writing utensil with retractable tip incorporating same

US Patent 7850382 · Granted Dec 14, 2010

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Surface topology manipulation for performance enhancement of additively manufact2024
Quantitative measurement of membrane protein function on a biosensor2024
Staged combustion liquid rocket engine cycle with the turbopump unit and preburn2024
Surface topology manipulation for performance enchancement of additively manufac2023
Staged combustion liquid rocket engine cycle with the turbopump unit and preburn2023
Surface topology manipulation for performance enhancement of additively manufact2023
Apparatus and method for cryostorage and manipulation of a plurality of containe2023
Resurfacing discharge ring of hydraulic turbine with runner in place2022
Apparatus for brake and caution lighting2021
Staged combustion liquid rocket engine cycle with the turbopump unit and preburn2021
Nib assembly having a double wall and writing instrument comprising same2016
Retractable instrument having a two stage protraction/retraction sequence2013