{"@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.patentleaderboard.com/"}, {"@type": "ListItem", "position": 2, "name": "Cxc", "item": "https://www.patentleaderboard.com/company/cxc"}, {"@type": "ListItem", "position": 3, "name": "Keith D. Walter", "item": "https://www.patentleaderboard.com/inventor/fl:ke_ln:walter-6"}]}
Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
KW

Keith D. Walter — 3 Patents

CXCxc: 3 patents #3 of 9Top 35%
Tecate Mission Road, CA: #599 of 2,121 inventorsTop 30%
California: #150,760 of 386,348 inventorsTop 40%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Keith D. Walter has been granted 3 US patents while listed as an inventor at Cxc. The first was granted in 1986 and the most recent in July 1987. Keith D. Walter ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Keith D. Walter in Tecate Mission Road, CA, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4679191 Variable bandwidth switching system Gary A. Nelson, Patrick N. Godding, Richard E. Schumaker, Edward S. Marrone, Stillman E. Gates +2 more 1987-07-07
4597077 Integrated voice/data/control switching system Gary A. Nelson, Patrick N. Godding, Richard E. Schumaker, Edward S. Marrone, Stillman F. Gates +2 more 1986-06-24
4587651 Distributed variable bandwidth switch for voice, data, and image communications Gary A. Nelson, Patrick N. Godding, Richard E. Schumaker, Edward S. Marrone, Stillman F. Gates +2 more 1986-05-06