LIQUID RING ROTOR
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Apr 25, 2024
app pub date -
Sep 27, 2023
filing date -
Sep 27, 2023
priority date (Note) -
Published
status (Latency Note)
![]() |
A preliminary load of PAIR data current through [] has been loaded. Any more recent PAIR data will be loaded within twenty-four hours. |
PAIR data current through []
A preliminary load of cached data will be loaded soon.
Any more recent PAIR data will be loaded within twenty-four hours.
![]() |
Next PAIR Update Scheduled on [ ] |

Importance

US Family Size
|
Non-US Coverage
|
Abstract
Liquid ring systems are known for compressing gasses. However, known systems include seals on moving surfaces that require high precision manufacturing. A liquid ring rotor is provided and methods of operating the same. A liquid ring rotor for a liquid ring system is provided and comprises a shaft, and one or more fluid diverting members. The shaft includes a hollow interior portion, the hollow interior portion having a first opening and a second opening, the second opening disposed in a surface that extends along a length of the shaft and spaced apart from the first opening in the length of the shaft, wherein the shaft is configured to enable a working fluid to pass along the shaft through the hollow interior portion between the openings.
First Claim
all claims..Other Claims data not available
Family
Country | kind | publication No. | Filing Date | Type | Sub-Type |
---|---|---|---|---|---|
GB | B | GB2610324 | Oct 24, 2022 | Patent | Grant |
Type : Patent Sub-Type : Grant | |||||
PATENT SPECIFICATION | A liquid ring rotor | Aug 30, 2023 |
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
KELSALL RICHARD PAUL | TETBURY |
International Classification(s)

- 2023 Application Filing Year
- F04D Class
- 799 Applications Filed
- 380 Patents Issued To-Date
- 47.56 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Kelsall, Richard Paul | Tetbury, GB | 2 | 0 |
# of filed Patents : 2 Total Citations : 0 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 0 Citation Count
- F04D Class
- 0 % this patent is cited more than
- 1 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Oct 25, 2027 |
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Oct 25, 2031 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 25, 2035 |
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 |
Full Text

Legal Events
Date | Code | Event | Description |
---|---|---|---|
Dec 22, 2004 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Nov 22, 2004 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Nov 21, 2004 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Nov 21, 2004 |
Jun 09, 2004 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Nov 21, 2000 | I | Issuance | |
Dec 09, 1999 | F | Filing | |
Dec 09, 1999 | PD | Priority Date | |
Dec 04, 1999 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:EMERY, WILLIAM M.;REEL/FRAME:010460/0111 Owner name: PROCOMM, INC., OHIO Effective Date: Dec 04, 1999 |

Matter Detail

Renewals Detail
