David Ruma

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Powell, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Acknowledgment authentication system and method
- Patent number 12,229,238
- Issue date Feb 18, 2025
- LAD Vertification Services, LLC
- David C. Ruma
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Acknowledgment authentication system and method
- Patent number 11,971,971
- Issue date Apr 30, 2024
- LAD Verification Services, LLC
- David C. Ruma
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Acknowledgment authentication system and method
- Patent number 11,132,426
- Issue date Sep 28, 2021
- LAD Verification Services, LLC
- David Ruma
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Acknowledgment authentication system and method
- Patent number 10,108,795
- Issue date Oct 23, 2018
- David Ruma
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Acknowledgment authentication system and method
- Patent number 9,727,718
- Issue date Aug 8, 2017
- David Ruma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Acknowledgment authentication system and method
- Patent number 9,240,990
- Issue date Jan 19, 2016
- David Ruma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
ACKNOWLEDGMENT AUTHENTICATION SYSTEM AND METHOD
- Publication number 20250148067
- Publication date May 8, 2025
- LAD Verification Services, LLC
- David C. Ruma
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
ACKNOWLEDGMENT AUTHENTICATION SYSTEM AND METHOD
- Publication number 20240241937
- Publication date Jul 18, 2024
- LAD Vertification Services, LLC
- David C. Ruma
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
ACKNOWLEDGMENT AUTHENTICATION SYSTEM AND METHOD
- Publication number 20210406355
- Publication date Dec 30, 2021
- LAD Verification Services, LLC
- David C. Ruma
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
ACKNOWLEDGMENT AUTHENTICATION SYSTEM AND METHOD
- Publication number 20190026454
- Publication date Jan 24, 2019
- LAD Verification Services, LLC
- David Ruma
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
ACKNOWLEDGMENT AUTHENTICATION SYSTEM AND METHOD
- Publication number 20170308691
- Publication date Oct 26, 2017
- LAD Verification Services, LLC
- David Ruma
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
ACKNOWLEDGMENT AUTHENTICATION SYSTEM AND METHOD
- Publication number 20160085953
- Publication date Mar 24, 2016
- David Ruma
- G06 - COMPUTING CALCULATING COUNTING