Emitter structures for enhanced thermionic emission

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11094493
APP PUB NO 20210035765A1
SERIAL NO

16529409

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

In one embodiment, a system includes a cathode and a thermionic emitter installed at least partially within the cathode tube of the cathode. The thermionic emitter is in a shape of a hollow cylinder. The hollow cylinder includes an outer surface and an unsmooth inner surface. The outer surface is configured to contact an inner surface of the cathode tube. The unsmooth inner surface includes a plurality of structures that provide an increase in surface area over a smooth surface.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
LOCKHEED MARTIN CORPORATION6801 ROCKLEDGE DRIVE BETHESDA MD 20817

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ebersohn, Frans Hendrik Palmdale, US 5 0
Heinrich, Jonathon Robert Albuquerque, US 4 0
Sovereign, Randall James Palmdale, US 5 3
Sullivan, Regina Mariko Palmdale, US 2 0

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Feb 17, 2025
7.5 Year Payment $3600.00 $1800.00 $900.00 Feb 17, 2029
11.5 Year Payment $7400.00 $3700.00 $1850.00 Feb 17, 2033
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00