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Official data from INPI

INDICADOR ÓTICO DE NÍVEL DE FLUIDO

Em AnáliseInvention Patent

Application data

Number

PI8603637

Type

Invention Patent

Filing

07/31/1986

Publication

03/10/1987

Progress at the INPI

  1. Filing07/31/86
  2. Publication03/10/87
  3. Examination12/20/88
  4. Allowance01/14/92
  5. Grant10/27/92
  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: 12/20/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

O. C. (pessoa física)

US

Inventors

J. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

761.542 · 08/01/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

12/20/1988

RPI 948

Publicação do pedido de patente

#3.1

03/10/1987

RPI 855

Pedido de patente depositado

#2.1

02/24/1987

RPI 853

Carta-patente expirada

#21.1

Patente extinta em 31/07/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

10/27/1992

RPI 1143

Notificação para pagamento de retribuição

#13.1

06/02/1992

RPI 1122

Deferimento

#9.1

01/14/1992

RPI 1102

Exigência - art. 36 da LPI

#6.1

07/30/1991

RPI 1078

Exigência - art. 36 da LPI

#6.1

02/05/1991

RPI 1053

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