Interrupted particle source
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 17, 2020
Grant Date -
N/A
app pub date -
Mar 1, 2017
filing date -
Nov 30, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A synchrocyclotron includes magnetic structures to provide a magnetic field to a cavity, a particle source to provide a plasma column to the cavity, where the particle source has a housing to hold the plasma column, and where the housing is interrupted at an acceleration region to expose the plasma column, and a voltage source to provide a radio frequency (RF) voltage to the cavity to accelerate particles from the plasma column at the acceleration region.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
MEVION MEDICAL SYSTEMS INC | 300 FOSTER STREET LITTLETON MA 01460 |
International Classification(s)

- 2017 Application Filing Year
- H05H Class
- 415 Applications Filed
- 273 Patents Issued To-Date
- 65.79 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Gall, Kenneth P | Somerville, US | 18 | 535 |
# of filed Patents : 18 Total Citations : 535 | |||
Zwart, Gerrit Townsend | Durham, US | 31 | 894 |
# of filed Patents : 31 Total Citations : 894 |
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Patent Citation Ranking
- 0 Citation Count
- H05H Class
- 0 % this patent is cited more than
- 5 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 17, 2028 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 17, 2032 |
Fee | Large entity fee | small entity fee | micro entity fee |
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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 |
Full Text

Legal Events
Date | Code | Event | Description |
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Jan 02, 2023 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Jul 18, 2022 | FEPP | FEE PAYMENT PROCEDURE | free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Mar 05, 2019 | I | Issuance | |
Oct 15, 2015 | F | Filing |

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