diff --git a/ontology/saref4ehaw.ttl b/ontology/saref4ehaw.ttl
index d4550f59e95ab3ccb2433c0a18ccb6f5479ea771..9b4793e8abcea8f7e051e2fc17c4cd28c639f9e6 100644
--- a/ontology/saref4ehaw.ttl
+++ b/ontology/saref4ehaw.ttl
@@ -267,14 +267,6 @@ s4ehaw:inCurrentMode rdf:type owl:ObjectProperty ;
                 rdfs:label "in current mode"@en .
 
 
-###  https://saref.etsi.org/s4ehaw/isAssociatedWith
-s4ehaw:isAssociatedWith rdf:type owl:ObjectProperty ;
-                        rdfs:domain s4ehaw:Atomic ;
-                        rdfs:range s4ehaw:Composite ;
-                        rdfs:comment "For a composite process, more than one atomic process are associated together." ;
-                        rdfs:label "is associated with"@en .
-
-
 ###  https://saref.etsi.org/s4ehaw/isAttachedTo
 s4ehaw:isAttachedTo rdf:type owl:ObjectProperty ;
                   rdfs:domain s4ehaw:HealthDevice ;
@@ -369,8 +361,8 @@ s4ehaw:uom rdf:type owl:ObjectProperty ;
 ###  https://saref.etsi.org/s4ehaw/uses
 s4ehaw:uses rdf:type owl:ObjectProperty ;
                      rdfs:domain s4ehaw:Actor ;
-                     rdfs:range saref:Ban ;
-                     rdfs:comment "Defines the relatonship between an actor - e.g. a caregiver, a patient or an gelper - that uses a ban for collecting, aggregating and relaying vital parameters" ;
+                     rdfs:range  s4ehaw:Ban ;
+                     rdfs:comment "Defines the relatonship between an actor - e.g. a caregiver, a patient or an helper - that uses a BAN for collecting, aggregating and relaying vital parameters" ;
                      rdfs:label "uses"@en .
 
 
@@ -668,7 +660,7 @@ s4ehaw:gender rdf:type owl:DatatypeProperty ;
 s4ehaw:groundingProtocol rdf:type owl:DatatypeProperty ;
                          rdfs:domain s4ehaw:ServiceGrounding ;
                          rdfs:range xsd:string ;
-                         rdfs:comment "The grouding protocol is the protocol used to transmit the message of the service, e.g. BLE" ;
+                         rdfs:comment "The grounding protocol is the protocol used to transmit the message of the service, e.g. BLE" ;
                          rdfs:label "grounding protocol"@en .
 
 
@@ -760,8 +752,8 @@ s4ehaw:hasResult rdf:type owl:DatatypeProperty ;
                  rdfs:label "has result"@en .
 
 
-###  https://saref.etsi.org/s4ehaw/impairement
-s4ehaw:impairement rdf:type owl:DatatypeProperty ;
+###  https://saref.etsi.org/s4ehaw/impairment
+s4ehaw:impairment rdf:type owl:DatatypeProperty ;
                    rdfs:domain s4ehaw:Patient ;
                    rdfs:range [ rdf:type rdfs:Datatype ;
                                 owl:oneOf [ rdf:type rdf:List ;
@@ -778,8 +770,8 @@ s4ehaw:impairement rdf:type owl:DatatypeProperty ;
                                                      ]
                                           ]
                               ] ;
-                   rdfs:comment "The impairement type of the patient, e.g. deaf, visual" ;
-                   rdfs:label "impairement"@en .
+                   rdfs:comment "The impairment type of the patient, e.g. deaf, visual" ;
+                   rdfs:label "impairment"@en .
 
 
 ###  https://saref.etsi.org/s4ehaw/interfaceId
@@ -866,7 +858,7 @@ s4ehaw:modeId rdf:type owl:DatatypeProperty ;
 s4ehaw:modeName rdf:type owl:DatatypeProperty ;
                 rdfs:domain s4ehaw:Mode ;
                 rdfs:range xsd:string ;
-                rdfs:comment "The mode name od a device, e.g. sleeping"@en ;
+                rdfs:comment "The mode name of a device, e.g. sleeping"@en ;
                 rdfs:label "mode name"@en .
 
 
@@ -1041,27 +1033,17 @@ s4ehaw:Alarm rdf:type owl:Class ;
              rdfs:subClassOf saref:Command .
 
 
-###  https://saref.etsi.org/s4ehaw/Atomic
-s4ehaw:Atomic rdf:type owl:Class ;
-              rdfs:subClassOf s4ehaw:ServiceProcess .
-
-
 ###  https://saref.etsi.org/s4ehaw/Ban
 s4ehaw:Ban rdf:type owl:Class .
 
 
-###  https://saref.etsi.org/s4ehaw/Body
-s4ehaw:Body rdf:type owl:Class ;
-            rdfs:subClassOf s4ehaw:ServiceCategory .
-
-
 ###  https://saref.etsi.org/s4ehaw/BodySurface
 s4ehaw:BodySurface rdf:type owl:Class ;
                    rdfs:subClassOf s4ehaw:Location .
 
 
-###  https://saref.etsi.org/s4ehaw/ByRequest
-s4ehaw:ByRequest rdf:type owl:Class ;
+###  https://saref.etsi.org/s4ehaw/OnRequest
+s4ehaw:OnRequest rdf:type owl:Class ;
                  rdfs:subClassOf s4ehaw:CommunicationProcess .
 
 
@@ -1074,11 +1056,6 @@ s4ehaw:Caregiver rdf:type owl:Class ;
 s4ehaw:CommunicationProcess rdf:type owl:Class .
 
 
-###  https://saref.etsi.org/s4ehaw/Composite
-s4ehaw:Composite rdf:type owl:Class ;
-                 rdfs:subClassOf s4ehaw:ServiceProcess .
-
-
 ###  https://saref.etsi.org/s4ehaw/Contact
 s4ehaw:Contact rdf:type owl:Class ;                                                       
                owl:equivalentClass s4ehaw:Actor .
@@ -1171,10 +1148,6 @@ s4ehaw:MeasurementProcess rdf:type owl:Class ;
 s4ehaw:MeasurementSession rdf:type owl:Class .
 
 
-###  https://saref.etsi.org/s4ehaw/MemoEnergy
-s4ehaw:MemoEnergy rdf:type owl:Class .
-
-
 ###  https://saref.etsi.org/s4ehaw/Mode
 s4ehaw:Mode rdf:type owl:Class ;
             rdf:comment "The dynamic characteristics of a eHealth Device that vary during its lifetime or its BAN lifetime" .
@@ -1220,12 +1193,6 @@ s4ehaw:ResponsibilityParty rdf:type owl:Class ;
 			   rdfs:comment "The legal entity responsible for a BAN, i.e. to contact in case of problem" .
 
 
-###  https://saref.etsi.org/s4ehaw/Security
-s4ehaw:Security rdf:type owl:Class ;
-                rdfs:subClassOf s4ehaw:Constraints ;
-                rdfs:comment "This is an empty container for describing the security constraints a data can be submitted to, like e.g. encryption."@en .
-
-
 ###  https://saref.etsi.org/saref#Sensor
 saref:Sensor rdf:type owl:Class ;
              rdfs:subClassOf s4ehaw:HealthDevice .