diff --git a/backend/api/v1/modules/a76/general_catalogs/concepts/service.py b/backend/api/v1/modules/a76/general_catalogs/concepts/service.py
index b0117771..4e50fc62 100644
--- a/backend/api/v1/modules/a76/general_catalogs/concepts/service.py
+++ b/backend/api/v1/modules/a76/general_catalogs/concepts/service.py
@@ -27,6 +27,14 @@ class ConceptService:
             Concept.company_id == company_id
         )
 
+        if filters:
+            if filters.get("code"):
+                query = query.filter(Concept.code.ilike(f"%{filters['code']}%"))
+            if filters.get("description"):
+                query = query.filter(
+                    Concept.description.ilike(f"%{filters['description']}%")
+                )
+
         total = query.count()
         items = query.offset(skip).limit(limit).all()
 
diff --git a/backend/api/v1/modules/a76/general_catalogs/identifiers/service.py b/backend/api/v1/modules/a76/general_catalogs/identifiers/service.py
index c4ff7578..187371f4 100644
--- a/backend/api/v1/modules/a76/general_catalogs/identifiers/service.py
+++ b/backend/api/v1/modules/a76/general_catalogs/identifiers/service.py
@@ -22,8 +22,12 @@ class IdentifierService:
         )
 
         if filters:
-            # Add filters here if needed
-            pass
+            if filters.get("code"):
+                query = query.filter(Identifier.code.ilike(f"%{filters['code']}%"))
+            if filters.get("description"):
+                query = query.filter(
+                    Identifier.description.ilike(f"%{filters['description']}%")
+                )
 
         total = query.count()
         items = query.offset(skip).limit(limit).all()
diff --git a/backend/api/v1/modules/a76/general_catalogs/legends/service.py b/backend/api/v1/modules/a76/general_catalogs/legends/service.py
index 0351f16a..e7b6c930 100644
--- a/backend/api/v1/modules/a76/general_catalogs/legends/service.py
+++ b/backend/api/v1/modules/a76/general_catalogs/legends/service.py
@@ -27,8 +27,12 @@ class LegendService:
         )
 
         if filters:
-            # Add filters here if needed
-            pass
+            if filters.get("code"):
+                query = query.filter(Legend.code.ilike(f"%{filters['code']}%"))
+            if filters.get("description"):
+                query = query.filter(
+                    Legend.description.ilike(f"%{filters['description']}%")
+                )
 
         total = query.count()
         items = query.offset(skip).limit(limit).all()
diff --git a/frontend/src/routes/dashboard/general_catalogs/seal/+page.svelte b/frontend/src/routes/dashboard/general_catalogs/seal/+page.svelte
index 511f5efd..3770194c 100644
--- a/frontend/src/routes/dashboard/general_catalogs/seal/+page.svelte
+++ b/frontend/src/routes/dashboard/general_catalogs/seal/+page.svelte
@@ -40,8 +40,10 @@
 
 	// Filters
 	let sealFilter = $state('');
+	let timeout: ReturnType<typeof setTimeout>;
 
 	let hasMore = $derived(allItems.length >= currentPage * pageSize);
+	const columns = createColumns();
 
 	onMount(() => {
 		// Sync access_token from cookies to localStorage
@@ -129,7 +131,10 @@
 	}
 
 	function handleSearch() {
-		loadInitialData();
+		clearTimeout(timeout);
+		timeout = setTimeout(() => {
+			loadInitialData();
+		}, 500);
 	}
 
 	function handleSuccess() {
@@ -162,7 +167,6 @@
 			return;
 		}
 
-		loading = true;
 		error = null;
 
 		try {
@@ -173,8 +177,6 @@
 		} catch (err) {
 			error = 'Error al eliminar el sello';
 			console.error('Error deleting seal:', err);
-		} finally {
-			loading = false;
 		}
 	}
 
@@ -218,7 +220,6 @@
 						placeholder="Filtrar por sello"
 						bind:value={sealFilter}
 						oninput={handleSearch}
-						disabled={loading}
 						class="h-9 w-44 bg-card lg:w-64"
 					/>
 				</div>
@@ -228,7 +229,7 @@
 			<div class="flex h-full min-h-0 rounded-md border bg-background overflow-hidden flex-col">
 				<InfiniteDataTable
 					data={allItems}
-					columns={createColumns()}
+					{columns}
 					{loading}
 					{hasMore}
 					{loadMore}
diff --git a/frontend/src/routes/dashboard/general_catalogs/unit_conversions/+page.svelte b/frontend/src/routes/dashboard/general_catalogs/unit_conversions/+page.svelte
index 759bac5a..3ef58111 100644
--- a/frontend/src/routes/dashboard/general_catalogs/unit_conversions/+page.svelte
+++ b/frontend/src/routes/dashboard/general_catalogs/unit_conversions/+page.svelte
@@ -45,6 +45,12 @@
 	let loading = $state(false);
 	let hasMore = $derived(allItems.length < totalItems);
 	let selectedIds = $state<(string | number)[]>([]);
+	const columns = createColumns();
+	const getCompanyId = () =>
+		companyStore.activeCompany?.id ??
+		allItems[0]?.company_id ??
+		data.conversions?.items?.[0]?.company_id ??
+		null;
 	const selectedItem = $derived(
 		selectedIds.length === 1
 			? allItems.find((item) => String(item.id) === String(selectedIds[0])) ?? null
@@ -64,7 +70,8 @@
 		if (!browser) return;
 		clearTimeout(timeout);
 		timeout = setTimeout(async () => {
-			if (!companyStore.activeCompany) return;
+			const companyId = getCompanyId();
+			if (!companyId) return;
 			loading = true;
 			error = null;
 			try {
@@ -75,7 +82,7 @@
 				const response = await getUnitConversions(
 					1,
 					pageSize,
-					companyStore.activeCompany.id,
+					companyId,
 					filters
 				);
 				if (response?.items) {
@@ -102,7 +109,9 @@
 	}
 
 	async function loadMore() {
-		if (loading || !hasMore || !companyStore.activeCompany) return;
+		if (loading || !hasMore) return;
+		const companyId = getCompanyId();
+		if (!companyId) return;
 		loading = true;
 		error = null;
 		try {
@@ -113,7 +122,7 @@
 			const response = await getUnitConversions(
 				currentPage + 1,
 				pageSize,
-				companyStore.activeCompany.id,
+				companyId,
 				filters
 			);
 			if (response?.items) {
@@ -130,7 +139,8 @@
 	}
 
 	async function reloadData() {
-		if (!companyStore.activeCompany) return;
+		const companyId = getCompanyId();
+		if (!companyId) return;
 		loading = true;
 		error = null;
 		try {
@@ -141,7 +151,7 @@
 			const response = await getUnitConversions(
 				1,
 				pageSize,
-				companyStore.activeCompany.id,
+				companyId,
 				filters
 			);
 			if (response?.items) {
@@ -236,7 +246,7 @@
 			<div class="rounded-md border bg-background overflow-hidden">
 				<InfiniteDataTable
 					data={allItems}
-					columns={createColumns()}
+					{columns}
 					{loading}
 					{hasMore}
 					{loadMore}