Vacuum tube amplification unit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Dec 1, 2015
Grant Date -
Jun 18, 2015
app pub date -
Feb 24, 2015
filing date -
Nov 8, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A vacuum tube amplification unit for use with electric instruments that allows for reduced or eliminated signal loss before the electrical signal of the instrument is amplified. The vacuum tube amplification unit includes an amplifier cartridge having an amplification circuit. The amplification cartridge is attached to and electrically connected to an instrument through a cartridge receiver. A pre-amp assembly of the amplification circuit provides a first stage of amplification, while an at least one vacuum tube provides a second stage of amplification. A power supply provides current to amplify the electrical signal of the instrument and a gain control allows for adjusting the magnitude of amplification. The amplification circuit may further include an integrated speaker, a signal converter, a transmitter, and a device terminal. Additionally, the amplifier cartridge may further include a device dock for attaching an electronic device.
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 | |
---|---|---|
HUMMEL MARKUS OLIVER | Not Provided |
International Classification(s)

- 2015 Application Filing Year
- G10H Class
- 279 Applications Filed
- 253 Patents Issued To-Date
- 90.69 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Hummel, Markus Oliver | San Jose, US | 11 | 19 |
# of filed Patents : 11 Total Citations : 19 |
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Patent Citation Ranking
- 0 Citation Count
- G10H Class
- 0 % this patent is cited more than
- 10 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 1, 2027 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
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 |
---|---|---|---|
Oct 27, 2021 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2551); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY year of fee payment: 4 |
May 01, 2018 | I | Issuance | |
Apr 11, 2018 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Jan 08, 2015 | P | Published | |
Jul 29, 2014 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TAMARU, YUTAKA;KATSUYAMA, TAKESHI;REEL/FRAME:033514/0752 Owner name: NATIONAL UNIVERSITY CORPORATION MIE UNIVERSITY, JA Effective Date: Jul 29, 2014 |
Jan 29, 2013 | F | Filing | |
Feb 17, 2012 | PD | Priority Date |

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