DETAILED ACTION
In response to Amendments/Arguments filed 5/22/2026. Claims 1-7 and 11-15 are pending. Claims 1 and 7 were amended. Claims 8-10 were cancelled. Claims 12-15 were added as new.
Claim Rejections - 35 USC § 102
The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action.
Claims 1, 3-7, and 12-13 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Beall et al. (US 20160102010).
Beall discloses a crystallized glass-ceramic composition and glass sheets thereof. Concerning claims 1, 3, and 7, Beall discloses an ion-exchanged glass sheet formed from a glass composition comprising 78.3 wt% SiO2, 8.1 wt% Al2O3, 0.2 wt% B2O3, 11.9 wt% Li2O, 1.7 wt% Na2O, 4.0 wt% ZrO2, and 2.2 wt% P2O5, which when converted is 70.1 mol% SiO2, 4.27 mol% Al2O3, 0.15 mol% B2O3, 21.42 mol% Li2O, 1.47 mol% Na2O, and 0.83 mol% P2O5, wherein the Na ion concentration decreases from the surface to the inner side and has at least a lithium disilicate precipitated and a compressive stress layer is formed (Table 1, Composition 2; FIG. 5; para. 0188-0207). With respect to claim 4, since the composition is the same, the XRD full width at half maximum would be within the claimed range. Regarding claim 5, the surface compressive stress is from 100 MPa to 500 MPa (para. 0189). In regards to claim 6, the thickness of the glass sheet is 0.8 to 10 mm and specifically 1 mm (para. 0181 and 0204-0207). With respect to claims 12 and 13, as shown above Composition 2 in Table 1 meets the instant limitations.
Claim Rejections - 35 USC § 103
The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action.
Claims 2, 11, and 14-15 are rejected under 35 U.S.C. 103 as being unpatentable over Beall et al. (US 20160102010).
Beall discloses the above, including the depth of layer is at least 100 microns, wherein the thickness of the DOL would therefore include and encompass the claimed DOL thickness of the glass sheet (para. 0188). Beall further discloses that ZrO2 is found at a content of 0.2 to 15 wt%, which when converted would include and encompass the claimed range in mol% (para. 0160). As the content of ZrO2 increases, the transparency of the glass would also increase (para. 0160). Therefore, it would have been obvious to one of ordinary skill in the art to have the claimed ZrO2 content. Examiner notes that the content of Li2O is from 12 to 20 wt% which would overlap and include the claimed range when converted and is added to obtain the crystalline phases (para. 0157).
Response to Arguments
Applicant’s arguments, see pp. 5-7, filed 5/22/2026, with respect to the 35 USC 102(a)(1) rejection under Click and 103 rejection under Akiba have been fully considered and are persuasive. The rejections of the claims have been withdrawn. Examiner acknowledges the instant amendments as overcoming the previous rejections.
Conclusion
Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a).
A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action.
Any inquiry concerning this communication or earlier communications from the examiner should be directed to PRASHANT J KHATRI whose telephone number is (571)270-3470. The examiner can normally be reached M-F 10AM-6:30PM.
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PRASHANT J. KHATRI
Primary Examiner
Art Unit 1783
/PRASHANT J KHATRI/Primary Examiner, Art Unit 1783
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