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Official data from INPI

APARELHO E MÉTODO PARA CONTROLAR E PROVER ESPESSURAS DE REVESTIMENTO DIFERENTES EM PELO MENOS UM LADO DE UMA FOLHA CONTÍNUA

PublicadaInvention Patent

Application data

Number

PI8800502

Type

Invention Patent

Filing

02/08/1988

Publication

09/27/1988

Progress at the INPI

  1. Filing02/08/88
  2. Publication09/27/88
  3. Examination10/02/90
  4. Allowance09/15/92
  5. Grant04/27/93
  6. Expired09/02/08

The letters patent expired on 09/02/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. C. (pessoa física)

US

Armco Steel Company, L.P

US

See this company's full portfolio

Inventors

F. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

012.581 · 02/09/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

09/27/1988

RPI 936

Pedido de patente depositado

#2.1

05/31/1988

RPI 919

Carta-patente expirada

#21.1

Patente extinta em 08/02/2003

09/02/2008

RPI 1965

Transferência deferida

#25.1

Transferido de: Armco Steel Company, L.P.

06/13/2000

RPI 1536

Concessão da patente

#16.1

04/27/1993

RPI 1169

Notificação para pagamento de retribuição

#13.1

02/02/1993

RPI 1157

Deferimento

#9.1

09/15/1992

RPI 1137

14.1

11/19/1991

RPI 1094

14.7

11/12/1991

RPI 1093

Solicitação de exame técnico

#4.1

10/02/1990

RPI 1035

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