DETAILED ACTION
Notice of Pre-AIA or AIA Status
The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA .
Response to Arguments
Applicant's arguments have been fully considered but they are not persuasive, as well as the Declaration under 37 CFR 1.132 filed on 9/18/25 is insufficient to overcome the rejection of claims 1-7 based upon obviousness as set forth in the last Office action because:
The declaration and the arguments relied on Example 4 of Takahashi et al. and not on Comparative Example 3 in which the rejection of record below relied on where the claimed molar ratios of X/P and O/P are met. In addition, the declaration hasn’t established the particular solid electrolyte having a crystalline phase with an argyrodite-type crystal structure containing the claimed elemental Li, P, S, X, and O. Further, the declaration is based on molar ratios of X/P and O/P outside that of the claimed invention and therefore, does not commensurate in scope of the claimed invention. For the reasons above, the declaration and arguments are not persuasive.
The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action.
Claim Rejections - 35 USC § 103
Claims 1-7 are rejected under 35 U.S.C. 103 as being unpatentable over Takahashi et all., WO 2019176895 (IDS of 11/4/22) relying on U.S. PGPub 2021/0013542 as English translation.
With regard to claims 1-5, Takahashi et al. teach a solid electrolyte comprising elemental lithium (Li), elemental phosphorous (P), elemental sulfur (S), and elemental halogen (Cl, Br), and oxygen (O). See abstract, [0002], [0010], [0018], [0020], [0021], [0023], [0024], [0029], [0031], and [0034].
Further, Takahashi et al. teach that the solid electrolyte has a crystalline phase with an argyrodite-type crystal structure. See abstract, [0002], [0009], [0010], [0011], [0018], and [0029].
In addition, Takahashi et al. teach a molar ratio of (halogen/phosphorous) Cl/P of 1.75 [10.2/5.8] and a molar ratio of (oxygen/phosphorous) O/P of 0.12 [0.7/5.8], both ratios falling within their respective claimed range. See Table 3, “Particle Surface” of 100 nm.
Takahashi et al. is silent in an X-ray diffraction pattern, the solid electrolyte exhibits:
peak A in a range of 2ꝋ = 21.6o to 22.6o;
peak B in a range of 2ꝋ = 22.7o to 23.7o; and
peak C in a range of 2ꝋ = 35.8o to 36.8o,
the X-ray diffraction pattern being obtained by an X-ray diffractometer using CuKα1 radiation; wherein the solid electrolyte exhibits peak M in a range of 2 ꝋ = 24.2o to 26.2o in an X-ray diffraction pattern obtained by an X-ray diffractometer using CuKα1 radiation, and a ratio of IA to IM, IA/IM, is more than 0 and less than 0.03, wherein IA represents an intensity of the peak A and IM represents an intensity of the peak M (claim 2); wherein the solid electrolyte exhibits peak M in a range of 2ꝋ = 24.2o to 26.2o in an X-ray diffraction pattern obtained by an X-ray diffractometer using CuKα1 radiation, and a ratio of IB to IM, IB/IM, is more than 0 and 0.025 or less, wherein IB represents an intensity of the peak B and IM represents an intensity of the peak M (claim 3); wherein the solid electrolyte exhibits peak M in a range of 2ꝋ = 24.2o to 26.2o in an X-ray diffraction pattern obtained by an X-ray diffractometer using CuKα1 radiation, and a ratio of IC to IM, lC/IM, is more than 0 and 0.012 or less, wherein IC represents an intensity of the peak C and IM represents an intensity of the peak M (claim 4); and wherein in an X-ray diffraction pattern, the solid electrolyte exhibits: peak D in a range of 2ꝋ = 32.00 to 35.30; and peak M in a range of 2ꝋ = 24.2o to 26.2o the X-ray diffraction pattern being obtained by an X-ray diffractometer using CuKα1 radiation, and a ratio of ID to IM, ID/IM, is less than 0.21, wherein ID represents an intensity of the peak D and IM represents an intensity of the peak M (claim 5).
However, as there is no clear compositional distinction between the solid electrolyte of Takahashi et al. comprises the Li, P, S, (Cl, Br), and O elements, as well as the molar ratios O/P and Cl/P and argyrodite crystal structure, and that of the claim, it would be inherent and/or expected for the solid electrolyte of Takahashi to exhibit X-ray diffraction pattern of peak A, peak B, and peak C obtained by an X-ray diffractometer using CuKα1 radiation, as well as peak W; wherein the solid electrolyte exhibits peak M in a range of 2ꝋ = 24.2o to 26.2o in an X-ray diffraction pattern obtained by an X-ray diffractometer using CuKα1 radiation, and a ratio of IB to IM, IB/IM, is more than 0 and 0.025 or less, wherein IB represents an intensity of the peak B and IM represents an intensity of the peak M; wherein the solid electrolyte exhibits peak M in a range of 2ꝋ = 24.2o to 26.2o in an X-ray diffraction pattern obtained by an X-ray diffractometer using CuKα1 radiation, and a ratio of IC to IM, lC/IM, is more than 0 and 0.012 or less, wherein Ic represents an intensity of the peak C and IM represents an intensity of the peak M; and wherein in an X-ray diffraction pattern, the solid electrolyte exhibits: peak D in a range of 2ꝋ = 32.00 to 35.30; and peak M in a range of 2ꝋ = 24.2o to 26.2o the X-ray diffraction pattern being obtained by an X-ray diffractometer using CuKα1 radiation, and a ratio of ID to IM, ID/IM, is less than 0.21, wherein ID represents an intensity of the peak D and IM represents an intensity of the peak M. MPEP 2112.01, I.
With regard to claim 6, Takahashi et al. teaches the solid electrolyte mixed with an active material. See [0044].
With regard to claim 7, Takahashi et al. teach an all-state lithium secondary battery comprising a positive electrode, a negative electrode, and a solid electrolyte layer of claim 1 interposed between the positive electrode layer and the negative electrode layer. See [0070].
Conclusion
THIS ACTION IS MADE FINAL. 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.
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/MILTON I CANO/Supervisory Patent Examiner
Art Unit 1723