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Official data from INPI

PROCESSO PARA O CONTROLE DA ESPESSURA LAMINAR DE LÂMINA TUBULARES, PRODUZIDAS NUMA UNIDADE EXTRUSORA DE LÂMINA A SOPRO.

Em AnáliseInvention Patent

Application data

Number

PI8102339

Type

Invention Patent

Filing

04/15/1981

Publication

12/15/1981

Progress at the INPI

  1. Filing04/15/81
  2. Publication12/15/81
  3. Examination09/27/83
  4. Allowance01/15/85
  5. Grant07/30/85
  6. Expired10/01/96

The letters patent expired on 10/01/1996: 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: 02/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Windmoller & Holscher

DE

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Inventors

U. H. (pessoa física)

Technical data

IPC Classification

Priority claims

DE

P 30 14 989.4 · 04/18/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

18.8

02/28/1989

RPI 958

Anuidade - prazo legal encerrado

#18.2

01/17/1989

RPI 952

Concessão da patente

#16.1

07/30/1985

RPI 771

Notificação para pagamento de retribuição

#13.1

05/07/1985

RPI 759

Deferimento

#9.1

01/15/1985

RPI 743

Republicação - classificação IPC

#15.11

01/08/1985

RPI 742

Exigência - art. 36 da LPI

#6.1

07/10/1984

RPI 716

Solicitação de exame técnico

#4.1

09/27/1983

RPI 675

Publicação do pedido de patente

#3.1

12/15/1981

RPI 582

Carta-patente expirada

#21.1

10/01/1996

RPI 1348

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