SilverStone

SilverStone is a non-stick plastic coating brand developed by DuPont for cookware. The product was introduced in 1976 as a three-coat fluoropolymer system consisting of a primer, a midcoat, and a topcoat. Its formulation used PTFE and PFA, materials intended to provide a more durable finish than conventional single-layer Teflon coatings. The brand belongs to the cookware-coating segment rather than to cookware manufacturing as a whole. SilverStone was applied to pans and other cookware made by third-party manufacturers, allowing those products to be marketed with a named DuPont coating technology. The system’s value proposition was based on non-stick performance, coating durability, and a more robust application process than simpler finishes. The manufacturing process described for SilverStone cookware began with sandblasting the cookware surface. This created an uneven texture intended to improve adhesion between the metal substrate and the coating. A primer layer based on Teflon was then sprayed onto the prepared surface and baked at high heat to establish a secure mechanical bond. One or two further coating layers were applied afterward, completing the multilayer system. By 1980, DuPont required cookware carrying the SilverStone brand to use a heavier gauge of material than other cookware available on the market. After the coating was applied, the cookware was baked in an oven at approximately 700–800 degrees, according to the reference account. These requirements linked the SilverStone name not only to a chemical formulation but also to specifications for the cookware body and coating process. SilverStone is distinct from the broader Teflon trademark, although the two are connected through DuPont’s fluoropolymer technology and the use of PTFE in the coating system. The available reference material documents the brand’s origin, formulation, application process, and early product requirements, but does not establish its current ownership structure, commercial availability, headquarters, executive leadership, or present market status. Accordingly, those details remain unconfirmed here.

SilverStone originated as a DuPont cookware-coating technology and was released in 1976. It was designed as a more durable alternative to simpler non-stick finishes through the use of a three-coat construction. The system incorporated PTFE and PFA fluoropolymers and was organized into a primer, a midcoat, and a topcoat. This layered architecture was intended to improve the coating’s resistance and performance compared with a single-layer treatment. The application process was central to the technology. Cookware surfaces were first sandblasted, producing a roughened texture that promoted adhesion. A primer layer described as Teflon-based was sprayed onto the prepared surface and baked at high temperature to create a secure mechanical grip. Additional layers were then applied, with the reference account indicating that one or two more coats followed the initial layer. The completed cookware was subjected to further high-temperature baking to affix the coating. DuPont also established physical requirements for cookware carrying the SilverStone brand. By 1980, the company required branded pans to be made with a heavier weight than other cookware on the market. The stated requirement positioned SilverStone as a system combining coating chemistry, surface preparation, thermal processing, and cookware-construction standards, rather than merely as a decorative or descriptive label. The available historical material does not provide a detailed chronology of later product generations, licensing arrangements, ownership changes, advertising campaigns, executive appointments, or the brand’s current market status. It does, however, establish SilverStone’s historical relationship with DuPont and its role in the development of branded non-stick cookware technology. SilverStone should therefore be treated as a DuPont product brand associated with fluoropolymer-coated cookware, not as a separate cookware retailer or as an unrelated brand using the Silverstone name.

1. 1980Heavier cookware requirement

   DuPont required pans carrying the SilverStone brand to use a heavier weight than other cookware on the market, according to the historical account.

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2. 1976SilverStone introduced

   DuPont released SilverStone as a three-coat non-stick fluoropolymer coating system for cookware, using PTFE and PFA in a primer, midcoat, and topcoat structure.

   Source

A multilayer, durability-oriented non-stick cookware coating technology associated with DuPont.

• SilverStone three-coat non-stick coating systemCookware coating1976

  The core SilverStone offering was a multilayer fluoropolymer coating for cookware. Its construction used a primer, a midcoat, and a topcoat, with PTFE and PFA identified as components of the formulation. Cookware was sandblasted before application, coated with a primer, and baked at high temperature to establish adhesion. One or two additional layers were then applied before final baking. The system was marketed through cookware products made by manufacturers using the SilverStone technology rather than as a standalone consumer appliance.

1. Silverstone (plastic)
2. DuPont history of Silverstone