P

Inventor

CAMPAGNA RALPH T

US8 patents
⚠️ This page may combine multiple inventors who share the name “CAMPAGNA RALPH T”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BAUMAN NATAN

3 patents
US10045133B2Aug 7, 2018

Variable sound attenuator with hearing aid

BAUMAN NATAN7 citations80
US9333116B2May 10, 2016

Variable sound attenuator

BAUMAN NATAN9 citations80
US9521480B2Dec 13, 2016

Variable noise attenuator with adjustable attenuation

BAUMAN NATAN4 citations69

NEWTON VICTORIA C

3 patents
US12425785B2Sep 23, 2025

Personal communication device

NEWTON VICTORIA C1 citations55
US11350225B2May 31, 2022

Personal sound amplification article and method for implementing same

NEWTON VICTORIA C1 citations53
US12120488B2Oct 15, 2024

Personal sound amplification article and method for implementing same

NEWTON VICTORIA C0 citations43

UNPLUGS HEARING INC

2 patents
USD1107687SDec 30, 2025

Sound attenuator

UNPLUGS HEARING INC0 citations52
US12501206B1Dec 16, 2025

Sound attenuator with push button actuator

UNPLUGS HEARING INC0 citations44