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Innovations

Patents

Innovations

NERDC Patents

NERDC holds an extensive portfolio of patents spanning four decades of engineering innovation — from renewable energy and agricultural machinery to waste management and medical devices, reflecting our commitment to creating practical, home-grown solutions for Sri Lanka.

46

Patents Granted

8

Decades of Work

31

First Patent

2023

Latest Patent

Patents

Other

3 patents
41

An Energy-saving method for making Sodium Carboxy Methyl Cellulose (NaCMC) by using corn husks and bagasse as the main raw material

21638
25/05/2022
42

Method for manufacturing of paint for Compressed Stabilized Earth Blocks(CSEB)

21240
15/06/2022
43

Automated fresh milk collecting pail washing machine

21566
25/07/2022

Patents

30s

1 patent
46 31

Flat rope making machine

21281
2025.10.31

Patents

2020s

8 patents
45 2023

Method for making an eco-composite mixture for manufacturing soil base building materials

22039
13.01.2023
44 2022

Industrial coconut dehusker for removing coconut husks from nuts

20503
16.12.2022
38 2021

A lifting mechanism for easy operation of lifting gates in irrigation canals using a floater

19847
05.05.2021
39 2021

Mechanized Device for Slip-Form Wall Construction

19598
08.07.2021
40 2021

Smoked Fish Processing Unit

19589
22.09.2021
35 2020

Fertilizer Applicator for Coconut Trees

17978
28.12.2020
36 2020

Toe Operated Prosthetic Hand

19590
28.12.2020
37 2020

Compact system for treatment of waste water in automobile service stations

18904
30.12.2020

Patents

2010s

7 patents
33 2018

Palmyrah Juice Extractor

16068
10.12.2018
32 2017

Small scale continuous pepper seed separating machine

16327
09.05.2017
31 2014

Flexible type screw feeding system for fuel wood chips, with a Twin screw type wood chips distributing system

16444
04.06.2014
25 2013

Airtight ferrocement bin

13164
27.08.2013
29 2013

Airtight ferrocement bin

13164
27.08.2013
30 2013

Improved heat controllable industrial Stove

15795
31.12.2013
24 2010

Improved smokeless natural draft wood gas stove

13034
16.06.2010

Patents

200s

1 patent
34 201

Power Weeder for row seeded/ row planted paddy field

18967
23.08.201

Patents

2000s

9 patents
27 2008

Segmented screw type Virgin Coconut Oil Expeller

14112
29.08.2008
28 2008

Biomass rice cooker

14613
20.11.2008
26 2006

Biomass hot air generator

14043
31.10.2006
23 2002

Hydraulic Jack Operated Coconut Oil Expeller

12512
13.02.2002
20 2001

Kitchen Waste Anaerobic Digester

12185
13.02.2001
21 2001

Forced Draft Smokeless Firewood Stove

12186
21.02.2001
22 2001

Pelleting Process for the manufacture of fuel pellets out of kitchen waste/ saw dust / paddy husk

12337
21.06.2001
18 2000

Low cost improved non ferrous melting furnace

12015
01.07.2000
19 2000

Small Scale Coconut Oil Extractor

12135
18.10.2000

Patents

1990s

14 patents
14 1999

Improved diesel saving device for duel fuel (Diesel + Bio gas) engine.

11562
05.02.1999
15 1999

Anaerobic - granular bacterial system for coconut waste water via

11632
14.05.1999
16 1999

Solar desalination to obtain potable water.

11637
01. 05.1999
17 1999

Tender Coconut King coconut puncher

11854
01.10.1999
12 1997

Bio gas generator for market garbage disposing.

11086
01.02.1997
13 1997

Improved Integrated solar water heater.

11189
08.09.1997
8 1996

lIdle jet control unit for petrol vehicles.

10869
04.04.1996
9 1996

lFoot operated Coconut de husker.

10914
17.05.1996
10 1996

Permanent magnet generator for low speed operations

10913
28.06.1996
11 1996

Saw dust / Paddy husk fuelled bakery oven

10950
05.07.1996
7 1991

lAn improved solar water heater with an elliptical integrated hot water storage tank.

10320
27.12.1991
4 1990

lPneumatic Water Piston Pump

9958
26.04.1990
5 1990

lSemi dry process of bio gas production.

10124
18.05.1990
6 1990

lSolar still with inclined corrugated basin and reinforced concrete frame.

10125
18.04.1990

Patents

1980s

3 patents
3 1988

Replacement of Petrol by Vegetable Oils and / or other Mineral Oils for the operation of Internal Combustion (Spark Ignition) Engines

9748
08.01.1988
2 1984

Method to increase the head available from and Air Lift Pump

9389
11.05.1984
1 1982

An Improvement on the cross flow double shot hydro-turbine for increasing efficiency

9048
06.08.1982