1. Stats
  2. USPTO
  3. TC 3700
  4. Group 3750
  5. Art Unit 3753
  6. Examiner Durden

Examiner Durden Richard K

3753-DURDEN-RICHARD-K

Employment Information

Art Unit:3753 — Fluid handling
Group:3750 — Fluid Handling and Dispensing
Classes: 138 — Pipes and tubular conduits
137 — Fluid handling
415 — Rotary kinetic fluid motors or pumps
416 — Fluid reaction surfaces (i.e., impellers)
251 — Valves and valve actuation
220 — Receptacles
Phone:(571) 270-0538
Email:richard.durden@uspto.gov
Location:VA 22314
Title:Pat Examnr Mechl Engrg
Service:11 years
Grade:GS-12

Grant Rate and Difficulty Ranking

72
3-Year Grant rate: 60% over 228 cases
Difficulty: Harder
Difficulty Percentile: 72nd

With Examiner Durden, you have a 60% chance of getting an issued patent by 3 years after the first office action. Examiner Durden is a harder examiner and in the 72nd percentile across all examiners (with 100th percentile most difficult).

Grant Rate

Grant Rate Timeline

Below is the grant rate timeline for Examiner Durden, where the timeline is relative to the date of the first office action. The three-year grant rate is the percentage of applications granted at three years after the first office action.

Comparison with Art Unit 3753

Examiner Durden's grant rate is lower than that of Art Unit 3753 and lower than that of the USPTO.

Average Office Actions Per Grant
Examiner Durden 1.7
Art Unit 3753 1.3

Interview Benefit

Grant Rate without Interview

Examiner Durden has granted 106 of 180 cases without any applicant-requested interviews for a grant rate of 59%.

Grant Rate with Interview

Examiner Durden has granted 31 of 48 cases with at least one applicant-requested interview for a grant rate of 65%.

Interview Benefit

With Examiner Durden, conducting an interview increases your chance of getting a patent granted by 10%.

Recent Dispositions

Recent Dispositions

Number Title OA Rejections Status IFW
18201530 Diaphragm For A Fluid Storage Tank Rejection information available with a Premium Stats subscription. See our pricing. Patented View
17920361 Accumulator Abandoned View
18002102 Piping System Insert Comprising An Adapter For A Pipe Access Means, And Method For Piping Work Abandoned View
18811765 Vibration-Reducing And Noise-Absorbing Pipeline With Metamaterial Characteristics Abandoned View
18181692 Insert With Diametral Locking Feature And Indication Feature For Installation And Method Of Installation Thereof Patented View
18135087 Water Containment Apparatus Patented View
18072350 Plugs For Anchoring Within Equipment And Methods Of Use For Pressure Testing Patented View
17169239 Hose Assembly Having Adjustable Sleeve Patented View
18014192 Sealing Device For Plugging A Leak In The Wall Of A Pipe Or Of A Tank Comprising A Part For Drilling And A Part For Tapping And Sealing Method Abandoned View
18066432 Sealing Element For Pipes Abandoned View
19083351 Steel Wire Pre-Embedded Integrated Full-Bore Acid Fracturing Hose Assembly And Preparation Method Thereof Patented View
17903569 Quick Disconnect Adapter Patented View
18317737 Temporary Trap Door Cap Patented View
18068364 Expansion Plug Assembly Abandoned View
19013419 Devices And Methods For Application Of A Cover To An Opening Of Variable Sizes Patented View
17312329 Pipe Cap Assembly Abandoned View
17788882 Pressure Vessel, Liquid Mixing Equipment, Liquid Mixing System, Method For Preparing Solution, Control System And Computer Readable Program Carrier Abandoned View
18008832 Pipe Plug Arrangement And Method For Activating Such Pipe Plug Arrangement Abandoned View
17784943 Pipe Isolation Device With Seal Patented View
17806603 Device For Winterizing Plumbing Abandoned View
18544760 Fluid Routing Plug Patented View
17825653 Medium Pressure Greater Expansion Tube Plug For Heat Exchangers Abandoned View
17308429 Water Pump Drain Plug System Abandoned View
18422134 Expandable Hose Patented View
18580757 Refrigerant-Transporting Hose Abandoned View
17753080 Pre-Tightening Force Repairing Method, Repairing Method Involving Combination Of Pre-Tightening Force And Clamp, And Repaired Pipeline Abandoned View
17774516 Piston Accumulator Abandoned View
18009769 Pipe Rehabilitation Construction Method Abandoned View
18714961 Multi-Layered Pipe Abandoned View
18371987 Pipe Repair Device Patented View
18371991 Method Of Repairing A Pipe Patented View
17830627 Flow Conditioner For Severe Flow Disturbances Patented View
18047949 Pipe Plug Abandoned View
16747522 Helically Wound Tubular Structures Patented View
16960688 Fibers For Reducing Drag Abandoned View
17838712 Activation System For Pipeline Plug Patented View
17833998 Tapered Hydraulic Hose, Methods Of Making, And Applications Thereof In Robot Systems Patented View
17496059 Humanized Heavy Hammer Structure Abandoned View
17748010 Sewer Cleanout Cap And Methods Abandoned View
17385878 Ventilation System Abandoned View
18371728 Stent Spring For Pipe Repair Device Patented View
18924432 Method For Refurbishing Pre-Stressed Concrete Cylinder Pipe And Refurbished Pre-Stressed Concrete Cylinder Pipe Patented View
18540490 Gripper Assembly For Pipeline Isolation Tool And Methods Of Use Patented View
17278784 Pipe Repair And The Methods For Operational Fixing And Definitive Welding Thereof Patented View
17788233 Coated Pipe Resistant To Casing Wear Abandoned View
17780463 Fluid Containment Covering For Pipe Leaks Abandoned View
17737853 Sealing Element For Pipes Abandoned View
16719011 Dampening Element For Fluid Management System Patented View
16773030 Ventilation System Abandoned View
17076583 Apparatus And Method For Pipe Repair Abandoned View

Appeals Statistics

Purchase Subscription

Subscribe to Premium Examiner Statistics for unlimited access for your law firm.

Disclaimer: We do not provide any guarantees as to the accuracy of the statistics presented above and under
no circumstances will we be liable for any outcome resulting from your reliance on the above statistics.