Official data from INPI

DISPOSITIVO COMPENSADOR DE CALOR

Em AnáliseInvention Patent

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Application data

Number

PI7803963

Type

Invention Patent

Filing

06/22/1978

Publication

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Progress at the INPI

Filing06/22/78
Publication
Examination
Allowance01/05/82
Grant
Expired11/30/93

The letters patent expired on 11/30/1993: 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: 07/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. B. (pessoa física)

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

18.8

07/26/1988

RPI 927

Anuidade - prazo legal encerrado

#18.2

06/14/1988

RPI 921

Cessão de direito de exploração

#22.1

04/02/1985

RPI 754

Notificação para pagamento de retribuição

#13.1

05/04/1982

RPI 602

Deferimento

#9.1

01/05/1982

RPI 585

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

From the same holder

DISPOSITIVO DE FECHAMENTO UTILIZADO EM MAQUINAS DE EMBALAGENS SISTEMA DE SOLDA E CORTE DE FILMES E LAMINADOS PLASTICOS PARA EMBALAGENS APERFEICOAMENTOS EM MAQUINAS PARA PALETIZAR CARGAS COM FILMES PLASTICOS RETRACTEIS

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