John D. Griffiths — 28 Patents at Holtec International

John D. Griffiths has been granted 28 US patents while listed as an inventor at Holtec International. The first was granted in 1990 and the most recent in May 2025. John D. Griffiths ranks #134,628 of 4,157,543 US inventors in our database (top 3.2%). Patent records list John D. Griffiths in Deptford, NJ, US.

Issued Patents All Time

Showing 1–25 of 28 patents

Patent #	Title	Co-Inventors	Date
12300399	Storage system for radioactive nuclear waste with pressure surge protection	Krishna P. Singh	2025-05-13
12198824	Method for ameliorating impact between components of nuclear fuel storage system	Krishna P. Singh	2025-01-14
12080440	Nuclear waste cask with impact protection, impact amelioration system for nuclear fuel storage, unventilated cask for storing nuclear waste, and storage and transport cask for nuclear waste	Krishna P. Singh, Charles W. BULLARD, II, Xuejun ZHAI	2024-09-03
11881324	Storage system for radioactive nuclear waste with pressure surge protection	Krishna P. Singh	2024-01-23
11742102	System and method for preparing a container loaded with wet radioactive elements for dry storage	Krishna P. Singh	2023-08-29
11721447	Impact amelioration system for nuclear fuel storage	Krishna P. Singh	2023-08-08
11610696	Nuclear waste cask with impact protection, impact amelioration system for nuclear fuel storage, unventilated cask for storing nuclear waste, and storage and transport cask for nuclear waste	Krishna P. Singh, Charles W. BULLARD, II, Xuejun ZHAI	2023-03-21
11515054	Method of retrofitting a spent nuclear fuel storage system	Stephen J. Agace, Stephen Thompson, Richard M. Springman	2022-11-29
11488737	Cooling system for casks containing high level nuclear waste	Krishna P. Singh, Debabrata Mitra-Majumdar, Abrar Hasan MOHAMMAD	2022-11-01
11443862	Storage system for radioactive nuclear waste with pressure surge protection	Krishna P. Singh	2022-09-13
11373774	Ventilated transfer cask	Krishna P. Singh	2022-06-28
10839969	System and method for preparing a container loaded with wet radioactive elements for dry storage	Krishna P. Singh	2020-11-17
10811154	Container for radioactive waste	Krishna P. Singh, Joseph Albert Meckley, Stephen J. Agace	2020-10-20
10535440	Snap-in insert for reactivity control in spent nuclear fuel pools and casks	Stephen J. Agace, Stephen Thompson, Richard M. Springman	2020-01-14
10418136	System and method for reclaiming energy from heat emanating from spent nuclear fuel	Krishna P. Singh, Debabrata Mitra-Majumdar	2019-09-17
10229764	System and method for preparing a container loaded with wet radioactive elements for dry storage	Krishna P. Singh	2019-03-12
9779843	Radioactive material storage canister	Krishna P. Singh, Joseph Albert Meckley	2017-10-03
9685248	Snap-in insert for reactivity control in spent nuclear fuel pools and casks	Stephen J. Agace, Stephen Thompson, Richard M. Springman	2017-06-20
9514853	System for storing high level radioactive waste	Krishna P. Singh	2016-12-06
9466400	Ventilated transfer cask with lifting feature	Krishna P. Singh	2016-10-11
9293229	Ventilated system for storing high level radioactive waste	Krishna P. Singh	2016-03-22
9165690	System and method for preparing a container loaded with wet radioactive elements for dry storage	Krishna P. Singh	2015-10-20
9001958	System and method for reclaiming energy from heat emanating from spent nuclear fuel	Krishna P. Singh, Debabrata Mitra-Majumdar	2015-04-07
8905259	Ventilated system for storing high level radioactive waste	Krishna P. Singh	2014-12-09
8718221	Method of transferring high level radioactive materials, and system for the same	Krishna P. Singh	2014-05-06

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John D. Griffiths — 28 Patents

Issued Patents All Time

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