Silfex Overview

  • Founded
  • 1971

  • Status
  • Acquired/​Merged

  • Employees
  • 1,400

  • Latest Deal Type
  • M&A

  • Financing Rounds
  • 1

Silfex General Information


Provider of ultrasonic silicon machining products and services. The company's machining technology based products and services include silicon ingots, assemblies, rings, gas distribution products, sensors, probes, critical system components, custom manufacturing services, precision cleaning and bonding, lapping, polishing, impact grinding and supply chain management services.

Contact Information

Formerly Known As
Bullen Ultrasonics, Bullen Semiconductor
Ownership Status
(Operating Subsidiary)
Financing Status
Corporate Backed or Acquired
Primary Industry
Industrial Supplies and Parts
Other Industries
Parent Company
Primary Office
  • 950 South Franklin Street
  • Eaton, OH 45320
  • United States
+1 (937) 000-0000

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Silfex Valuation & Funding

Deal Type Date Amount Valuation/
Post-Val Status Debt

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Silfex Patents

Silfex Recent Patent Activity

Publication ID Patent Title Status First Filing Date Technology (CPC) Citations
US-20220285134-A1 Near netshape additive manufacturing using low temperature plasma jets Pending 23-Aug-2019 000000000000
JP-2022545494-A 3d printing of fully dense, crack-free silicon by selective laser melting/sintering at high temperature Pending 23-Aug-2019 000000000
US-20220281133-A1 3d printing of fully dense and crack free silicon with selective laser melting/sintering at elevated temperatures Pending 23-Aug-2019 000000000
JP-2022520744-A Textured silicon semiconductor processing chamber components Pending 06-Feb-2019 000000000000
US-20220093370-A1 Textured silicon semiconductor processing chamber components Pending 06-Feb-2019 H01J37/32467
To view Silfex’s complete patent history, request access »

Silfex Signals

Growth Rate

0.80% Weekly
Weekly Growth 0.80%, 93rd %
-35.5%. 530%

Size Multiple

219x Median
Size Multiple 219x, 100th %ile
0.00x 0.95x. 413Kx

Key Data Points

Twitter Followers


Similarweb Unique Visitors


Majestic Referring Domains


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