Galvanometer unit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Apr 30, 2002
Grant Date -
N/A
app pub date -
Nov 2, 1999
filing date -
Nov 2, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A galvanometer unit comprises a limited-rotation motor with a load element such as a mirror attached to a shaft extending from the motor. In a servo loop that controls the angular position of the mirror, a position-sensor attached to the shaft provides position feedback information. The sensor includes a rotor which is positioned at the null point of the fundamental torsional resonance mode of the rotating system, thereby essentially eliminating feedback components resulting from the resonance.
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 | |
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NOVANTA CORPORATION | 125 MIDDLESEX TURNPIKE BEDFORD MA 01730 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Brown, David C | Northborough, MA | 169 | 3979 |
# of filed Patents : 169 Total Citations : 3979 | |||
Stukalin, Felix | Framingham, MA | 20 | 138 |
# of filed Patents : 20 Total Citations : 138 |
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Patent Citation Ranking
- 3 Citation Count
- H02K Class
- 3.43 % this patent is cited more than
- 23 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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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

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Aug 29, 2023 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 8 |
Sep 16, 2019 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4 |
Apr 26, 2016 | I | Issuance | |
Apr 06, 2016 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Aug 14, 2014 | P | Published | |
Aug 15, 2013 | F | Filing | |
Aug 12, 2013 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHIU, CHIEN-HWA;CHAO, CHIH-MIN;KUO, PEIR-RONG;AND OTHERS;REEL/FRAME:031014/0768 Owner name: ICHIA TECHNOLOGIES,INC., TAIWAN Effective Date: Aug 12, 2013 |
Feb 08, 2013 | PD | Priority Date |

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