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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8303596

Type

Invention Patent

Filing

07/05/1983

Publication

02/14/1984

Progress at the INPI

  1. Filing07/05/83
  2. Publication02/14/84
  3. Examination06/03/86
  4. Allowance06/23/87
  5. Grant12/29/87
  6. Expired07/01/08

The letters patent expired on 07/01/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 12/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Otis Elevator Company

US

See this company's full portfolio

Inventors

K. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/29/1987

RPI 897

Notificação para pagamento de retribuição

#13.1

10/20/1987

RPI 887

Deferimento

#9.1

06/23/1987

RPI 870

Solicitação de exame técnico

#4.1

06/03/1986

RPI 815

Publicação do pedido de patente

#3.1

02/14/1984

RPI 695

Pedido de patente depositado

#2.1

08/16/1983

RPI 669

Carta-patente expirada

#21.1

Patente extinta em 05/07/98

07/01/2008

RPI 1956

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