510(k) · Cleared

Cleared

KB58-KF

K922958510(k) TraditionalCleared Feb 26, 1993253-day reviewClass II21 CFR 872.3060

Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly, last Nov 3, 2026

Jeneric/Pentron, Inc. · EJS Alloy, Other Noble Metal

Cleared on Feb 26, 1993 after a 253-day review. FDA lists a 510(k) statement for it but has not posted the file, so its predicates are not known. 2 later devices descend from it.

Decided: Feb 26, 1993
Review: 253 days
Class: Class II
Product code: EJS
Recalls: None
Predicates: 0

2 later devices descend from it, 1 citing it directly.

This deviceK922958 KB58-KFJeneric/Pentron, Inc. · 1993
Descendant · cites it directly · 1 of its ownK993173 Gold Core 55Jeneric/Pentron, Inc. · 1999
Descendant · 2 generations on · 0 of its ownK023501 Gold Core 35Pentron Laboratory Technologies · 2002

Most influential descendants

Showing 2 of 2 · See all

K993173Gold Core 55Jeneric/Pentron, Inc. · 1999 · cites it directly1descendant
K023501Gold Core 35Pentron Laboratory Technologies · 2002 · 2 generations on0descendants

View FIG. 1 as a table

Line of descent and top descendants

Generation	Number	Device	Applicant	Decided	Recalls
0 (this device)	K922958	KB58-KF	Jeneric/Pentron, Inc.	1993	—
+1	K993173	Gold Core 55	Jeneric/Pentron, Inc.	1999	—
+2	K023501	Gold Core 35	Pentron Laboratory Technologies	2002	—

Descendants by year cleared

Year cleared	Devices	With a Class I recall
1999	1	0
2002	1	0

FIG. 1 — Lineage of K922958, 1993–2002Source: FDA 510(k) summaries, read by 510(k) Report · How lineage is built

Sources: FDA 510(k) database (decision fields), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.

Planning a device in EJS? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.

Candidate predicates for a device like this, rankedin the report
Recall history across each candidate’s familyin the report

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What was it cleared against?

FDA lists a 510(k) statement for it but has not posted the file, so its predicates are not known.

What descends from it? (2)

1 later device cites it directly; ranked here by how many devices descend from each in turn.

Number	Device	Applicant	Decided	Descendants
K993173	Gold Core 55	Jeneric/Pentron, Inc.	1999	1

Has anything in its family been recalled? (0 Class I)

No FDA recall names this device.

No ancestor or descendant has a Class I recall.

What does this lineage say?

Of its descendants, K993173 (Jeneric/Pentron, Inc., 1999) has gone furthest, with 1 descendant of its own.

How does its category compare?

All EJS devices

EJS Alloy, Other Noble Metal: FDA decisions, review times, recalls and adverse event reports over 20 years.

FDA decisions per year · EJS

FDA has decided no EJS device since 2007.

Median 510(k) review, days · EJS

Too few EJS 510(k)s in any year since 2007 to give a median.

Recalls per year · EJS

No recall names EJS since 2007.

Adverse event reports per year · EJS

No MAUDE report names EJS since 2007.

View these four charts as a table

Year	Median 510(k) review, days	MAUDE reports
2007	—	0
2008	—	0
2009	—	0
2010	—	0
2011	—	0
2012	—	0
2013	—	0
2014	—	0
2015	—	0
2016	—	0
2017	—	0
2018	—	0
2019	—	0
2020	—	0
2021	—	0
2022	—	0
2023	—	0
2024	—	0
2025	—	0
2026	—	—

https://510kreport.com/device/K922958 · printed Nov 6, 2026

Cite this page

510(k) Report. “K922958: KB58-KF.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K922958

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Record history

FDA decision record loaded May 2, 2026
Lineage and recalls computed Nov 3, 2026
Page last updated Nov 3, 2026