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Official data from INPI

MECANISMO DE ROLO APERFEIÇOADO

Em AnáliseInvention Patent

Application data

Number

PI8602030

Type

Invention Patent

Filing

05/06/1986

Publication

03/10/1987

Progress at the INPI

  1. Filing05/06/86
  2. Publication03/10/87
  3. Examination03/21/89
  4. Allowance06/26/90
  5. Grant02/13/91
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 03/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Atochem North America, Inc.

US

P. C. (pessoa física)

US

See this company's full portfolio

Inventors

I. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

757.559 · 07/22/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

03/21/1989

RPI 961

Publicação do pedido de patente

#3.1

03/10/1987

RPI 855

Pedido de patente depositado

#2.1

11/04/1986

RPI 837

Carta-patente expirada

#21.1

Patente extinta em 06/05/2001

07/22/2008

RPI 1959

20.4

12/10/1991

RPI 1097

Concessão da patente

#16.1

02/13/1991

RPI 1054

Notificação para pagamento de retribuição

#13.1

10/09/1990

RPI 1036

Deferimento

#9.1

06/26/1990

RPI 1024

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