ORDER AND JUDGMENT **
Plaintiff Delmar Jerome Suttles appeals from a district court order, issued by a magistrate judge under 28 U.S.C. § 636(c), affirming the Commissioner’s decision to deny social security disability and supplemental security income benefits. We independently review the Commissioner’s decision to determine whether it is free of legal error and supported by substantial *825evidence, Krauser v. Astrue, 638 F.3d 1324, 1326 (10th Cir.2011), and affirm for the reasons explained below.
I. THE AGENCY DECISION
The Administrative Law Judge (ALJ) denied benefits at step four of the five-step sequence for determining disability. See Wall v. Astrue, 561 F.3d 1048, 1052 (10th Cir.2009) (summarizing steps). At step one the ALJ confirmed that Mr. Suttles had not engaged in substantial gainful activity since October 26, 2008, the alleged onset date. At step two the ALJ found Mr. Suttles “has the following severe impairments: right knee pain; diabetes mel-litus; hypertension and history of lacunar stroke.” App. Vol. 2 at 16. The ALJ also noted “a medically determinable impairment[] of depression,” but found it did “not cause more than a minimal limitation in the claimant’s ability to perform basic mental work activities and [is] therefore nonsevere.” Id. at 17. At step three the ALJ held that Mr. Suttles’ condition did not meet or equal any of the presumptively disabling impairments listed in 20 C.F.R. Pt. 404, Subpart P, App. 1. The ALJ then found Mr. Suttles has the residual functional capacity (RFC) for a full range of sedentary work. Based on testimony from a vocational expert (VE), the ALJ concluded that Mr. Suttles could return to his past relevant work as a computer customer-service representative and, accordingly, denied disability at step four.
II. CHALLENGES TO THE AGENCY DECISION
Mr. Suttles raises two issues relating to the analysis of his depression at step four. First, he contends the ALJ’s consideration of this impairment improperly ended at the step-two finding of non-severity, leading the ALJ to disregard its potential effect on RFC and omit if from the VE inquiry underlying the denial of disability at step four. He also notes in this regard that the ALJ himself found at step two that the impairment posed a demonstrable, albeit mild, limitation in the “functional area [of] concentration, persistence or pace,” App. Vol. 2 at 17, yet did not include this limitation at step four. Second, he contends the ALJ failed to delineate the relevant mental demands of his past work and compare them to the limitation imposed by his depression, relying instead on the conclusory opinion of the VE that he could perform the work, contrary to Winfrey v. Chater, 92 F.3d 1017, 1023-25 (10th Cir.1996). As explained below, we reject Mr. Suttles’ objections to the ALJ’s RFC determination, which in turn undercuts his objection to the ALJ’s use of the VE.
In Wells v. Colvin, 727 F.3d 1061 (10th Cir.2013), this court discussed the regulatory directives that require an independent step-four assessment of mental impairments found medically determinable but non-severe at step two. We noted that at step two the ALJ rates the degree of limitation resulting from all medically determinable mental impairments in four broad functional areas, including, as relevant here, “concentration, persistence, or pace.” Id. at 1068 (quoting 20 C.F.R. §§ 404.1520a(c)(3), 416.920a(c)(3)). Ratings that fall short of specified levels dictate a finding of “not severe.” Id. (quoting 20 C.F.R. §§ 404.1520a(d)(l), 416.920a(d)(l)). But “[a] conclusion that the claimant’s mental impairments are non-severe at step two does not permit the ALJ simply to disregard those impairments when assessing a claimant’s RFC and making conclusions at steps four and five.” Id. at 1068-69. Rather, “[i]n his RFC assessment, the ALJ must consider the combined effect of all medically determinable impairments, whether severe or not.” Id. at 1069 (citing 20 C.F.R. *826§§ 404.1545(a)(2), 416.945(a)(2)). Mr. Sut-tles contends that, as in Wells, the ALJ here improperly disregarded his mental impairment at step four after finding it non-severe at step two. We disagree.
After finding Mr. Suttles’ depression non-severe at step two, the ALJ recognized that a distinct mental RFC assessment was still required at step four:
The limitations identified ... [at step two] are not a residual functional capacity assessment, but are used to rate the severity of mental impairments at steps 2 and 3 of the sequential evaluation process. The mental residual functional capacity assessment used at steps 4 and 5 of the sequential evaluation process requires a more detailed assessment by itemizing functions contained in the broad categories ... [previously considered at steps two and three].
App. Vol. 2 at 17. At step four, the ALJ discussed evidence relating to depression and then pointedly omitted any limitation associated with that mental impairment on the RFC (a full range of sedentary work), though the ALJ admittedly could have been more explicit in tying the former discussion to the latter conclusion. Significantly, the ALJ did not make any ancillary statement, like that made by the ALJ in Wells, affirmatively suggesting an improper conflation of the step-two and step-four assessments. See 727 F.3d at 1069 (noting “language used [that] suggests that the ALJ may have relied on his step-two findings to conclude that [the claimant] had no [RFC] limitation based on her mental impairments”). Taking “common sense, not technical perfection, [a]s our guide,” Keyes-Zachary v. Astrue, 695 F.3d 1156, 1167 (10th Cir.2012), we hold that the ALJ conducted a mental RFC assessment separate from the non-severity determination made at step two.
Of course, that is not to say the step-four assessment was necessarily supported by substantial evidence, but Mr. Suttles has not presented an adequately developed challenge to that aspect of the ALJ’s decision. Save for two patently meritless objections,1 he does not challenge particular aspects of the ALJ’s discussion of the evidence, nor cite to specific evidence in the record that the ALJ should have but did not address. Rather, he objects only in conclusory terms that his non-severe mental impairment was “not considered in the hypothetical to the VE or in the ALJ’s RFC.” Aplt. Br. at 18. As explained above, the ALJ did consider the impairment at the RFC stage, and its omission from the hypothetical to the VE is a proper consequence of the ALJ’s determination that it did not have an effect on RFC.
Mr. Suttles also objects that the ALJ omitted from the RFC assessment a mild limitation found at step two regarding concentration, persistence, or pace. However, this court has repeatedly held, albeit in unpublished decisions, that mental limitations noted in the threshold inquiry at steps two and three do not apply at later steps. Beasley v. Colvin, 520 Fed.Appx. 748, 754 (10th Cir.2013); DeFalco-Miller v. Colvin, 520 Fed.Appx. 741, 747-48 (10th *827Cir.2013). While these decisions are not binding, they are persuasive and we follow the same reasoning here. See Fed. R.App. P. 32.1; 10th Cir. R. 32.1(A).
In sum, the ALJ’s RFC determination that Mr. Suttles can perform a full range of sedentary work has not been successfully challenged. That conclusion fatally undercuts Mr. Suttles’ objection to the VE inquiry underlying the denial of disability at step four. Such an inquiry is sufficient if “it contain[s] all of the limitations found to exist by the ALJ.” Barnett v. Apfel, 231 F.3d 687, 690 (10th Cir.2000). That was the case here. And since there was no recognized limitation regarding Mr. Sut-tles’ mental functioning, there could be no error in failing to flesh out the mental demands of his past work to compare with such a limitation under the Winfrey process.
The order of the district court upholding the Commissioner’s decision to deny benefits is affirmed.