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Official data from INPI

ESCADA ROLANTE

DeferidaInvention Patent

Application data

Number

PI8502056

Type

Invention Patent

Filing

04/30/1985

Publication

12/31/1985

Progress at the INPI

  1. Filing04/30/85
  2. Publication12/31/85
  3. Examination02/09/88
  4. Allowance09/05/89
  5. Grant05/29/90
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 09/05/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. C. (pessoa física)

US

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Inventors

G. K. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

607.096 · 05/04/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

09/05/1989

RPI 985

Solicitação de exame técnico

#4.1

02/09/1988

RPI 903

Republicação - classificação IPC

#15.11

03/10/1987

RPI 855

Publicação do pedido de patente

#3.1

12/31/1985

RPI 793

Pedido de patente depositado

#2.1

07/09/1985

RPI 768

Carta-patente expirada

#21.1

Patente extinta em 30/04/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

05/29/1990

RPI 1020

Notificação para pagamento de retribuição

#13.1

01/09/1990

RPI 1001

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