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Official data from INPI

LÂMINA CORTANTE CIRCULAR E LÂMINA CIRCULAR

Prazo de SigiloInvention Patent

Application data

Number

PI8901338

Type

Invention Patent

Filing

03/21/1989

Publication

10/23/1990

Progress at the INPI

  1. Filing03/21/89
  2. Publication10/23/90
  3. Examination04/06/93
  4. Allowance01/18/94
  5. Grant06/28/94
  6. Expired12/15/09

The letters patent expired on 12/15/2009: 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: 05/09/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

R. C. (pessoa física)

US

Inventors

R. C. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

05/09/1989

RPI 968

Carta-patente expirada

#21.1

Patente extinta em 21/03/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

06/28/1994

RPI 1230

Notificação para pagamento de retribuição

#13.1

05/10/1994

RPI 1223

Deferimento

#9.1

01/18/1994

RPI 1207

Solicitação de exame técnico

#4.1

04/06/1993

RPI 1166

Publicação do pedido de patente

#3.1

10/23/1990

RPI 1038

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