Invention Grant
- Patent Title: Oxide coatings for metal surfaces
-
Application No.: US15487300Application Date: 2017-04-13
-
Publication No.: US10927473B2Publication Date: 2021-02-23
- Inventor: James A. Curran , Zechariah D. Feinberg , Christopher D. Prest , Joseph C. Poole
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Dorsey & Whitney LLP
- Main IPC: H05K5/02
- IPC: H05K5/02 ; H05K5/04 ; C25D11/26 ; C25D11/18 ; C23C14/08 ; C25D11/16 ; C23C14/58 ; C23C16/40 ; C23C16/56 ; C25D11/08 ; C25D11/24

Abstract:
Oxide coatings that reduce or eliminate the appearance of thin film interference coloring are described. In some embodiments, the oxide coatings are configured to reduce the appearance of fingerprints. In some cases, the oxide coatings are sufficiently thick to increase the optical path difference of incident light, thereby reducing any inference coloring by the fingerprint to a non-visible level. In some embodiments, the oxide coatings have a non-uniform thickness that changes the way light reflects off of interfaces of the oxide coating, thereby reducing or eliminating any thin film interference coloring caused by the oxide coatings themselves or by a fingerprint.
Public/Granted literature
- US20180084658A1 OXIDE COATINGS FOR METAL SURFACES Public/Granted day:2018-03-22
Information query