diff --git a/src/MiscJSDoc.ts b/src/MiscJSDoc.ts
index 9ba55f5627..fbe3d246a4 100644
--- a/src/MiscJSDoc.ts
+++ b/src/MiscJSDoc.ts
@@ -133,6 +133,7 @@ export class ObservableDoc {
    * @static true
    * @name create
    * @owner Observable
+   * @nocollapse
    */
   static create<T>(onSubscription: <R>(observer: Observer<R>) => TeardownLogic): Observable<T> {
     return new Observable<T>(onSubscription);
diff --git a/src/internal/observable/SubscribeOnObservable.ts b/src/internal/observable/SubscribeOnObservable.ts
index de686e984d..64839cf63c 100644
--- a/src/internal/observable/SubscribeOnObservable.ts
+++ b/src/internal/observable/SubscribeOnObservable.ts
@@ -16,10 +16,12 @@ export interface DispatchArg<T> {
  * @hide true
  */
 export class SubscribeOnObservable<T> extends Observable<T> {
+  /** @nocollapse */
   static create<T>(source: Observable<T>, delay: number = 0, scheduler: SchedulerLike = asap): Observable<T> {
     return new SubscribeOnObservable(source, delay, scheduler);
   }
 
+  /** @nocollapse */
   static dispatch<T>(this: SchedulerAction<T>, arg: DispatchArg<T>): Subscription {
     const { source, subscriber } = arg;
     return this.add(source.subscribe(subscriber));
@@ -46,4 +48,4 @@ export class SubscribeOnObservable<T> extends Observable<T> {
       source, subscriber
     });
   }
-}
\ No newline at end of file
+}
diff --git a/src/internal/observable/dom/AjaxObservable.ts b/src/internal/observable/dom/AjaxObservable.ts
index 46ae687918..51de1dcbc2 100644
--- a/src/internal/observable/dom/AjaxObservable.ts
+++ b/src/internal/observable/dom/AjaxObservable.ts
@@ -131,6 +131,7 @@ export class AjaxObservable<T> extends Observable<T> {
    * @static true
    * @name ajax
    * @owner Observable
+   * @nocollapse
   */
   static create: AjaxCreationMethod = (() => {
     const create: any = (urlOrRequest: string | AjaxRequest) => {
diff --git a/src/internal/operators/observeOn.ts b/src/internal/operators/observeOn.ts
index 9b946bbb7c..7325d8b4ff 100644
--- a/src/internal/operators/observeOn.ts
+++ b/src/internal/operators/observeOn.ts
@@ -71,6 +71,7 @@ export class ObserveOnOperator<T> implements Operator<T, T> {
  * @extends {Ignored}
  */
 export class ObserveOnSubscriber<T> extends Subscriber<T> {
+  /** @nocollapse */
   static dispatch(this: SchedulerAction<ObserveOnMessage>, arg: ObserveOnMessage) {
     const { notification, destination } = arg;
     notification.observe(destination);
diff --git a/src/internal/testing/TestScheduler.ts b/src/internal/testing/TestScheduler.ts
index d452f172ce..1fba35203e 100644
--- a/src/internal/testing/TestScheduler.ts
+++ b/src/internal/testing/TestScheduler.ts
@@ -136,6 +136,7 @@ export class TestScheduler extends VirtualTimeScheduler {
     }
   }
 
+  /** @nocollapse */
   static parseMarblesAsSubscriptions(marbles: string): SubscriptionLog {
     if (typeof marbles !== 'string') {
       return new SubscriptionLog(Number.POSITIVE_INFINITY);
@@ -185,6 +186,7 @@ export class TestScheduler extends VirtualTimeScheduler {
     }
   }
 
+  /** @nocollapse */
   static parseMarbles(marbles: string,
                       values?: any,
                       errorValue?: any,