Virtual Patent Marking Notice by HDC Products, Inc. and KD Enterprises LLC under 35 U.S.C. § 287(a), as of March 2, 2021, until this list is next revised.  The list may not be all inclusive of all patents and all products.  The list applies to all sizes (nominal or actual outside diameter), threads (if present), configurations, and quantities.  At least the following products are protected by patents in the U.S. and internationally for HDC Products, Inc. and KD Enterprises LLC:

1. Whole House Hydrodynamic Cavitation (HDC) Unit and/or System (for 1″, 25 mm, 32 mm, etc. pipe)
2. Portable Spa Hydrodynamic Cavitation (HDC) Unit and/or System (for 1″, 25 mm, 32 mm, etc. pipe)
3. Backyard Hydrodynamic Cavitation (HDC) Unit and/or System (for 2″, 50 mm, 63 mm, etc. pipe)
4. Commercial Hydrodynamic Cavitation (HDC) Unit and/or System (for 2″, 50 mm, 63 mm, etc. pipe)
5. Commercial Hydrodynamic Cavitation (HDC) Unit and/or System (for 3″, 75 mm, 90 mm, etc. pipe)
6. Commercial Hydrodynamic Cavitation (HDC) Unit and/or System (for 4″, 100 mm, 110 mm, etc. pipe)
7. Hydrodynamic Cavitation (HDC) Unit and/or System (for 1/2″, 16 mm, 20 mm, etc. pipe)
8. Hydrodynamic Cavitation (HDC) Unit and/or System (for 3/4″, 20 mm, 25 mm, etc. pipe)
9. Hydrodynamic Cavitation (HDC) Unit and/or System (for 1-1/4″, 30 mm, 40 mm, etc. pipe)
10. Hydrodynamic Cavitation (HDC) Unit and/or System (for 1-1/2″, 40 mm, 50 mm, etc. pipe)

If you have any questions about this list, please email legal@hdcproductsinc.com.

U.S. Patents Pending

International Patent Application No.:  PCT/US2021/020224

International Patents Pending

1.    Albania

2.    Algeria

3.    Angola

4.    Antigua and Barbuda

5.    Armenia

6.    Australia

7.    Austria

8.    Azerbaijan

9.    Bahrain

10. Barbados

11. Belarus

12. Belgium

13. Belize

14. Benin

15. Bosnia and Herzegovina

16. Botswana

17. Brazil

18. Brunei Darussalam

19. Bulgaria

20. Burkina Faso

21. Cambodia

22. Cameroon

23. Canada

24. Central African Republic

25. Chad

26. Chile

27. China

28. Colombia

29. Comoros

30. Congo

31. Costa Rica

32. Côte d’Ivoire

33. Croatia

34. Cuba

35. Cyprus

36. Czechia

37. Democratic People’s Republic of Korea

38. Denmark

39. Djibouti

40. Dominica

41. Dominican Republic

42. Ecuador

43. Egypt

44. El Salvador

45. Equatorial Guinea

46. Estonia

47. Eswatini

48. Finland

49. France

50. Gabon

51. Gambia

52. Georgia

53. Germany

54. Ghana

55. Greece

56. Grenada

57. Guatemala

58. Guinea

59. Guinea-Bissau

60. Honduras

61. Hungary

62. Iceland

63. India

64. Indonesia

65. Iran (Islamic Republic of)

66. Ireland

67. Israel

68. Italy

69. Japan

70. Jordan

71. Kazakhstan

72. Kenya

73. Kuwait

74. Kyrgyzstan

75. Lao People’s Democratic Republic

76. Latvia

77. Lesotho

78. Liberia

79. Libya

80. Liechtenstein

81. Lithuania

82. Luxembourg

83. Madagascar

84. Malawi

85. Malaysia

86. Mali

87. Malta

88. Mauritania

89. Mexico

90. Monaco

91. Mongolia

92. Montenegro

93. Morocco

94. Mozambique

95. Namibia

96. Netherlands

97. New Zealand

98. Nicaragua

99. Niger

100.              Nigeria

101.              North Macedonia

102.              Norway

103.              Oman

104.              Panama

105.              Papua New Guinea

106.              Peru

107.              Philippines

108.              Poland

109.              Portugal

110.              Qatar

111.              Republic of Korea

112.              Republic of Moldova

113.              Romania

114.              Russian Federation

115.              Rwanda

116.              Saint Kitts and Nevis

117.              Saint Lucia

118.              Saint Vincent and the Grenadines

119.              Samoa

120.              San Marino

121.              Sao Tome and Principe

122.              Saudi Arabia

123.              Senegal

124.              Serbia

125.              Seychelles

126.              Sierra Leone

127.              Singapore

128.              Slovakia

129.              Slovenia

130.              South Africa

131.              Spain

132.              Sri Lanka

133.              Sudan

134.              Sweden

135.              Switzerland

136.              Syrian Arab Republic

137.              Tajikistan

138.              Thailand

139.              Togo

140.              Trinidad and Tobago

141.              Tunisia

142.              Turkey

143.              Turkmenistan

144.              Uganda

145.              Ukraine

146.              United Arab Emirates

147.              United Kingdom

148.              United Republic of Tanzania

149.              United States of America

150.              Uzbekistan

151.              Viet Nam  

152.              Zambia

153.              Zimbabwe