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Official data from INPI

SISTEMA DE ILUMINAÇÃO DE EMERGÊNCIA ACIONADO AUTOMATICAMENTE PARA UMA CABINE DE ELEVADOR

PublicadaInvention Patent

Application data

Number

PI8704855

Type

Invention Patent

Filing

09/22/1987

Publication

05/17/1988

Progress at the INPI

  1. Filing09/22/87
  2. Publication05/17/88
  3. Examination10/30/90
  4. Allowance02/18/92
  5. Grant10/27/92
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 05/17/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. C. (pessoa física)

US

See this company's full portfolio

Inventors

K. O. (pessoa física)

US

P. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

912.855 · 09/29/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

05/17/1988

RPI 917

Pedido de patente depositado

#2.1

12/22/1987

RPI 896

Carta-patente expirada

#21.1

Patente extinta em 22/09/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

10/27/1992

RPI 1143

Notificação para pagamento de retribuição

#13.1

07/07/1992

RPI 1127

Deferimento

#9.1

02/18/1992

RPI 1107

Exigência - art. 36 da LPI

#6.1

07/23/1991

RPI 1077

Solicitação de exame técnico

#4.1

10/30/1990

RPI 1039

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