Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Optically active diffractive device

Optically active diffractive device

US Patent 5638201 · Granted Jun 10, 1997

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Liquid crystal alignment quality and stability2025
Self-lubricating film over wide temperature ranges in vacuum and preparation met2025
Environment-friendly and flame-retardant abradable seal coating material with ul2025
Preparation method of niobium diselenide film with ultra-low friction and low el2025
Semi-online analytical apparatus for measuring atmospheric trace nitrogen-contai2025
DC-DC converter and method of controlling the same2025
Roof top air conditioner unit, methods for producing, assembling and installing 2024
Kind of online PM2.5 concentrated collection instrument2023
Synergist for water-based drilling fluid and preparation method therefor, water-2022
Large angle image steering device2021
Power loss protection integrated circuit with autonomous capacitor health check2020
Compact non-mechanical zoom lens having focal lengths dependent upon left- or ri2020